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Finding the Fourth Proportional to 91,693.32, 126,537.11 and 57,724.29

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Solution

The fourth proportional to 91,693.32, 126,537.11 and 57,724.29 is: 79,659.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,693.32 : 126,537.11 = 57,724.29 : x
  2. Step 2: Convert to fraction form
    91,693.32/126,537.11 = 57,724.29/x
  3. Step 3: Cross multiply
    91,693.32x = 126,537.11 × 57,724.29
  4. Step 4: Simplify right side
    91,693.32x = 7,304,264,286.73
  5. Step 5: Solve for x
    x = 7,304,264,286.73/91,693.32
  6. Step 6: Final answer
    x = 79,659.72

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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.