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Finding the Fourth Proportional to 64,859.79, 89,472.45 and 52,773.78

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Solution

The fourth proportional to 64,859.79, 89,472.45 and 52,773.78 is: 72,800.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,859.79 : 89,472.45 = 52,773.78 : x
  2. Step 2: Convert to fraction form
    64,859.79/89,472.45 = 52,773.78/x
  3. Step 3: Cross multiply
    64,859.79x = 89,472.45 × 52,773.78
  4. Step 4: Simplify right side
    64,859.79x = 4,721,799,125.65
  5. Step 5: Solve for x
    x = 4,721,799,125.65/64,859.79
  6. Step 6: Final answer
    x = 72,800.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.