Home / 90,081.50-124,229.79-54,209.21

Finding the Fourth Proportional to 90,081.50, 124,229.79 and 54,209.21

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Solution

The fourth proportional to 90,081.50, 124,229.79 and 54,209.21 is: 74,758.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,081.50 : 124,229.79 = 54,209.21 : x
  2. Step 2: Convert to fraction form
    90,081.50/124,229.79 = 54,209.21/x
  3. Step 3: Cross multiply
    90,081.50x = 124,229.79 × 54,209.21
  4. Step 4: Simplify right side
    90,081.50x = 6,734,398,153.22
  5. Step 5: Solve for x
    x = 6,734,398,153.22/90,081.50
  6. Step 6: Final answer
    x = 74,758.95

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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.