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Finding the Fourth Proportional to 66,680, 100,020.96 and 17,432

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Solution

The fourth proportional to 66,680, 100,020.96 and 17,432 is: 26,148.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,680 : 100,020.96 = 17,432 : x
  2. Step 2: Convert to fraction form
    66,680/100,020.96 = 17,432/x
  3. Step 3: Cross multiply
    66,680x = 100,020.96 × 17,432
  4. Step 4: Simplify right side
    66,680x = 1,743,565,374.72
  5. Step 5: Solve for x
    x = 1,743,565,374.72/66,680
  6. Step 6: Final answer
    x = 26,148.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.