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Finding the Fourth Proportional to 66,549.72, 99,665.43 and 38,384.39

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Solution

The fourth proportional to 66,549.72, 99,665.43 and 38,384.39 is: 57,484.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,549.72 : 99,665.43 = 38,384.39 : x
  2. Step 2: Convert to fraction form
    66,549.72/99,665.43 = 38,384.39/x
  3. Step 3: Cross multiply
    66,549.72x = 99,665.43 × 38,384.39
  4. Step 4: Simplify right side
    66,549.72x = 3,825,596,734.64
  5. Step 5: Solve for x
    x = 3,825,596,734.64/66,549.72
  6. Step 6: Final answer
    x = 57,484.79

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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.