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Finding the Fourth Proportional to 90,217.72, 124,500.72 and 49,934.28

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Solution

The fourth proportional to 90,217.72, 124,500.72 and 49,934.28 is: 68,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,217.72 : 124,500.72 = 49,934.28 : x
  2. Step 2: Convert to fraction form
    90,217.72/124,500.72 = 49,934.28/x
  3. Step 3: Cross multiply
    90,217.72x = 124,500.72 × 49,934.28
  4. Step 4: Simplify right side
    90,217.72x = 6,216,853,812.68
  5. Step 5: Solve for x
    x = 6,216,853,812.68/90,217.72
  6. Step 6: Final answer
    x = 68,909.45

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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.