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Finding the Fourth Proportional to 91,099.80, 136,601.10 and 38,449.80

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Solution

The fourth proportional to 91,099.80, 136,601.10 and 38,449.80 is: 57,654.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,099.80 : 136,601.10 = 38,449.80 : x
  2. Step 2: Convert to fraction form
    91,099.80/136,601.10 = 38,449.80/x
  3. Step 3: Cross multiply
    91,099.80x = 136,601.10 × 38,449.80
  4. Step 4: Simplify right side
    91,099.80x = 5,252,284,974.78
  5. Step 5: Solve for x
    x = 5,252,284,974.78/91,099.80
  6. Step 6: Final answer
    x = 57,654.19

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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.