Home / 85,723,407.70-128,585,111.55-21,897,999.70

Finding the Fourth Proportional to 85,723,407.70, 128,585,111.55 and 21,897,999.70

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Solution

The fourth proportional to 85,723,407.70, 128,585,111.55 and 21,897,999.70 is: 32,846,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,723,407.70 : 128,585,111.55 = 21,897,999.70 : x
  2. Step 2: Convert to fraction form
    85,723,407.70/128,585,111.55 = 21,897,999.70/x
  3. Step 3: Cross multiply
    85,723,407.70x = 128,585,111.55 × 21,897,999.70
  4. Step 4: Simplify right side
    85,723,407.70x = 2,815,756,734,146,366.50
  5. Step 5: Solve for x
    x = 2,815,756,734,146,366.50/85,723,407.70
  6. Step 6: Final answer
    x = 32,846,999.55

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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.