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Finding the Fourth Proportional to 57,729.20, 86,593.80 and 56,001.20

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Solution

The fourth proportional to 57,729.20, 86,593.80 and 56,001.20 is: 84,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,729.20 : 86,593.80 = 56,001.20 : x
  2. Step 2: Convert to fraction form
    57,729.20/86,593.80 = 56,001.20/x
  3. Step 3: Cross multiply
    57,729.20x = 86,593.80 × 56,001.20
  4. Step 4: Simplify right side
    57,729.20x = 4,849,356,712.56
  5. Step 5: Solve for x
    x = 4,849,356,712.56/57,729.20
  6. Step 6: Final answer
    x = 84,001.80

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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.