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Finding the Fourth Proportional to 91,247.90, 136,861.07 and 28,067.90

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Solution

The fourth proportional to 91,247.90, 136,861.07 and 28,067.90 is: 42,098.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,247.90 : 136,861.07 = 28,067.90 : x
  2. Step 2: Convert to fraction form
    91,247.90/136,861.07 = 28,067.90/x
  3. Step 3: Cross multiply
    91,247.90x = 136,861.07 × 28,067.90
  4. Step 4: Simplify right side
    91,247.90x = 3,841,402,002.01
  5. Step 5: Solve for x
    x = 3,841,402,002.01/91,247.90
  6. Step 6: Final answer
    x = 42,098.53

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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.