Home / 85,546.40-128,125.20-54,053.60

Finding the Fourth Proportional to 85,546.40, 128,125.20 and 54,053.60

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Solution

The fourth proportional to 85,546.40, 128,125.20 and 54,053.60 is: 80,957.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,546.40 : 128,125.20 = 54,053.60 : x
  2. Step 2: Convert to fraction form
    85,546.40/128,125.20 = 54,053.60/x
  3. Step 3: Cross multiply
    85,546.40x = 128,125.20 × 54,053.60
  4. Step 4: Simplify right side
    85,546.40x = 6,925,628,310.72
  5. Step 5: Solve for x
    x = 6,925,628,310.72/85,546.40
  6. Step 6: Final answer
    x = 80,957.57

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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.