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Finding the Fourth Proportional to 90,470.93, 124,741.01 and 75,385.49

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Solution

The fourth proportional to 90,470.93, 124,741.01 and 75,385.49 is: 103,941.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,470.93 : 124,741.01 = 75,385.49 : x
  2. Step 2: Convert to fraction form
    90,470.93/124,741.01 = 75,385.49/x
  3. Step 3: Cross multiply
    90,470.93x = 124,741.01 × 75,385.49
  4. Step 4: Simplify right side
    90,470.93x = 9,403,661,726.70
  5. Step 5: Solve for x
    x = 9,403,661,726.70/90,470.93
  6. Step 6: Final answer
    x = 103,941.26

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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.