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Finding the Fourth Proportional to 91,149.48, 125,843.22 and 69,887.88

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Solution

The fourth proportional to 91,149.48, 125,843.22 and 69,887.88 is: 96,488.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,149.48 : 125,843.22 = 69,887.88 : x
  2. Step 2: Convert to fraction form
    91,149.48/125,843.22 = 69,887.88/x
  3. Step 3: Cross multiply
    91,149.48x = 125,843.22 × 69,887.88
  4. Step 4: Simplify right side
    91,149.48x = 8,794,915,858.17
  5. Step 5: Solve for x
    x = 8,794,915,858.17/91,149.48
  6. Step 6: Final answer
    x = 96,488.93

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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.