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Finding the Fourth Proportional to 57,729.80, 86,594.70 and 56,952.20

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Solution

The fourth proportional to 57,729.80, 86,594.70 and 56,952.20 is: 85,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,729.80 : 86,594.70 = 56,952.20 : x
  2. Step 2: Convert to fraction form
    57,729.80/86,594.70 = 56,952.20/x
  3. Step 3: Cross multiply
    57,729.80x = 86,594.70 × 56,952.20
  4. Step 4: Simplify right side
    57,729.80x = 4,931,758,673.34
  5. Step 5: Solve for x
    x = 4,931,758,673.34/57,729.80
  6. Step 6: Final answer
    x = 85,428.30

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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.