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Finding the Fourth Proportional to 66,463.72, 91,714.02 and 38,166.76

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Solution

The fourth proportional to 66,463.72, 91,714.02 and 38,166.76 is: 52,666.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,463.72 : 91,714.02 = 38,166.76 : x
  2. Step 2: Convert to fraction form
    66,463.72/91,714.02 = 38,166.76/x
  3. Step 3: Cross multiply
    66,463.72x = 91,714.02 × 38,166.76
  4. Step 4: Simplify right side
    66,463.72x = 3,500,426,989.98
  5. Step 5: Solve for x
    x = 3,500,426,989.98/66,463.72
  6. Step 6: Final answer
    x = 52,666.73

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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.