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Finding the Fourth Proportional to 90,251.66, 124,549.05 and 49,964.28

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Solution

The fourth proportional to 90,251.66, 124,549.05 and 49,964.28 is: 68,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,251.66 : 124,549.05 = 49,964.28 : x
  2. Step 2: Convert to fraction form
    90,251.66/124,549.05 = 49,964.28/x
  3. Step 3: Cross multiply
    90,251.66x = 124,549.05 × 49,964.28
  4. Step 4: Simplify right side
    90,251.66x = 6,223,003,607.93
  5. Step 5: Solve for x
    x = 6,223,003,607.93/90,251.66
  6. Step 6: Final answer
    x = 68,951.68

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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.