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Finding the Fourth Proportional to 64,869.12, 89,515.89 and 36,572.97

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Solution

The fourth proportional to 64,869.12, 89,515.89 and 36,572.97 is: 50,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,869.12 : 89,515.89 = 36,572.97 : x
  2. Step 2: Convert to fraction form
    64,869.12/89,515.89 = 36,572.97/x
  3. Step 3: Cross multiply
    64,869.12x = 89,515.89 × 36,572.97
  4. Step 4: Simplify right side
    64,869.12x = 3,273,861,959.49
  5. Step 5: Solve for x
    x = 3,273,861,959.49/64,869.12
  6. Step 6: Final answer
    x = 50,468.73

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1.5x scale

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.