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Finding the Fourth Proportional to 83,391.72, 125,119.64 and 50,134.74

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Solution

The fourth proportional to 83,391.72, 125,119.64 and 50,134.74 is: 75,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,391.72 : 125,119.64 = 50,134.74 : x
  2. Step 2: Convert to fraction form
    83,391.72/125,119.64 = 50,134.74/x
  3. Step 3: Cross multiply
    83,391.72x = 125,119.64 × 50,134.74
  4. Step 4: Simplify right side
    83,391.72x = 6,272,839,744.02
  5. Step 5: Solve for x
    x = 6,272,839,744.02/83,391.72
  6. Step 6: Final answer
    x = 75,221.38

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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.