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Finding the Fourth Proportional to 91,125, 136,748.25 and 35,011.44

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Solution

The fourth proportional to 91,125, 136,748.25 and 35,011.44 is: 52,540.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,125 : 136,748.25 = 35,011.44 : x
  2. Step 2: Convert to fraction form
    91,125/136,748.25 = 35,011.44/x
  3. Step 3: Cross multiply
    91,125x = 136,748.25 × 35,011.44
  4. Step 4: Simplify right side
    91,125x = 4,787,753,149.98
  5. Step 5: Solve for x
    x = 4,787,753,149.98/91,125
  6. Step 6: Final answer
    x = 52,540.50

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1.5x scale

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.