Home / 90,105.72-124,340.87-49,817.13

Finding the Fourth Proportional to 90,105.72, 124,340.87 and 49,817.13

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Solution

The fourth proportional to 90,105.72, 124,340.87 and 49,817.13 is: 68,744.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,105.72 : 124,340.87 = 49,817.13 : x
  2. Step 2: Convert to fraction form
    90,105.72/124,340.87 = 49,817.13/x
  3. Step 3: Cross multiply
    90,105.72x = 124,340.87 × 49,817.13
  4. Step 4: Simplify right side
    90,105.72x = 6,194,304,414.31
  5. Step 5: Solve for x
    x = 6,194,304,414.31/90,105.72
  6. Step 6: Final answer
    x = 68,744.86

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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.