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Finding the Fourth Proportional to 64,472.40, 88,965.96 and 36,172.88

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Solution

The fourth proportional to 64,472.40, 88,965.96 and 36,172.88 is: 49,915.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,472.40 : 88,965.96 = 36,172.88 : x
  2. Step 2: Convert to fraction form
    64,472.40/88,965.96 = 36,172.88/x
  3. Step 3: Cross multiply
    64,472.40x = 88,965.96 × 36,172.88
  4. Step 4: Simplify right side
    64,472.40x = 3,218,154,995.16
  5. Step 5: Solve for x
    x = 3,218,154,995.16/64,472.40
  6. Step 6: Final answer
    x = 49,915.23

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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.