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Finding the Fourth Proportional to 91,191.44, 125,745 and 59,301.20

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Solution

The fourth proportional to 91,191.44, 125,745 and 59,301.20 is: 81,771.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,191.44 : 125,745 = 59,301.20 : x
  2. Step 2: Convert to fraction form
    91,191.44/125,745 = 59,301.20/x
  3. Step 3: Cross multiply
    91,191.44x = 125,745 × 59,301.20
  4. Step 4: Simplify right side
    91,191.44x = 7,456,829,394
  5. Step 5: Solve for x
    x = 7,456,829,394/91,191.44
  6. Step 6: Final answer
    x = 81,771.16

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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.