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Finding the Fourth Proportional to 90,402.43, 124,743.83 and 50,115.83

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Solution

The fourth proportional to 90,402.43, 124,743.83 and 50,115.83 is: 69,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,402.43 : 124,743.83 = 50,115.83 : x
  2. Step 2: Convert to fraction form
    90,402.43/124,743.83 = 50,115.83/x
  3. Step 3: Cross multiply
    90,402.43x = 124,743.83 × 50,115.83
  4. Step 4: Simplify right side
    90,402.43x = 6,251,640,327.25
  5. Step 5: Solve for x
    x = 6,251,640,327.25/90,402.43
  6. Step 6: Final answer
    x = 69,153.45

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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.