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Finding the Fourth Proportional to 66,565.31, 99,848.90 and 37,170.21

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Solution

The fourth proportional to 66,565.31, 99,848.90 and 37,170.21 is: 55,755.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,565.31 : 99,848.90 = 37,170.21 : x
  2. Step 2: Convert to fraction form
    66,565.31/99,848.90 = 37,170.21/x
  3. Step 3: Cross multiply
    66,565.31x = 99,848.90 × 37,170.21
  4. Step 4: Simplify right side
    66,565.31x = 3,711,404,395.42
  5. Step 5: Solve for x
    x = 3,711,404,395.42/66,565.31
  6. Step 6: Final answer
    x = 55,755.84

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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.