Home / 85,443,134.40-128,164,701.60-20,746,503.72

Finding the Fourth Proportional to 85,443,134.40, 128,164,701.60 and 20,746,503.72

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Solution

The fourth proportional to 85,443,134.40, 128,164,701.60 and 20,746,503.72 is: 31,119,755.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,443,134.40 : 128,164,701.60 = 20,746,503.72 : x
  2. Step 2: Convert to fraction form
    85,443,134.40/128,164,701.60 = 20,746,503.72/x
  3. Step 3: Cross multiply
    85,443,134.40x = 128,164,701.60 × 20,746,503.72
  4. Step 4: Simplify right side
    85,443,134.40x = 2,658,969,458,517,089.50
  5. Step 5: Solve for x
    x = 2,658,969,458,517,089.50/85,443,134.40
  6. Step 6: Final answer
    x = 31,119,755.58

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.