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Finding the Fourth Proportional to 83,732.72, 115,435.68 and 66,794.42

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Solution

The fourth proportional to 83,732.72, 115,435.68 and 66,794.42 is: 92,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,732.72 : 115,435.68 = 66,794.42 : x
  2. Step 2: Convert to fraction form
    83,732.72/115,435.68 = 66,794.42/x
  3. Step 3: Cross multiply
    83,732.72x = 115,435.68 × 66,794.42
  4. Step 4: Simplify right side
    83,732.72x = 7,710,459,292.91
  5. Step 5: Solve for x
    x = 7,710,459,292.91/83,732.72
  6. Step 6: Final answer
    x = 92,084.19

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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.