Home / 90,123.17-124,370.75-49,839.64

Finding the Fourth Proportional to 90,123.17, 124,370.75 and 49,839.64

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Solution

The fourth proportional to 90,123.17, 124,370.75 and 49,839.64 is: 68,779.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,123.17 : 124,370.75 = 49,839.64 : x
  2. Step 2: Convert to fraction form
    90,123.17/124,370.75 = 49,839.64/x
  3. Step 3: Cross multiply
    90,123.17x = 124,370.75 × 49,839.64
  4. Step 4: Simplify right side
    90,123.17x = 6,198,593,220.20
  5. Step 5: Solve for x
    x = 6,198,593,220.20/90,123.17
  6. Step 6: Final answer
    x = 68,779.13

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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.