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Finding the Fourth Proportional to 57,731.60, 86,597.40 and 35,472.80

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Solution

The fourth proportional to 57,731.60, 86,597.40 and 35,472.80 is: 53,209.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,731.60 : 86,597.40 = 35,472.80 : x
  2. Step 2: Convert to fraction form
    57,731.60/86,597.40 = 35,472.80/x
  3. Step 3: Cross multiply
    57,731.60x = 86,597.40 × 35,472.80
  4. Step 4: Simplify right side
    57,731.60x = 3,071,852,250.72
  5. Step 5: Solve for x
    x = 3,071,852,250.72/57,731.60
  6. Step 6: Final answer
    x = 53,209.20

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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.