Home / 90,375.67-124,648.24-61,718.38

Finding the Fourth Proportional to 90,375.67, 124,648.24 and 61,718.38

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Solution

The fourth proportional to 90,375.67, 124,648.24 and 61,718.38 is: 85,123.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,375.67 : 124,648.24 = 61,718.38 : x
  2. Step 2: Convert to fraction form
    90,375.67/124,648.24 = 61,718.38/x
  3. Step 3: Cross multiply
    90,375.67x = 124,648.24 × 61,718.38
  4. Step 4: Simplify right side
    90,375.67x = 7,693,087,442.65
  5. Step 5: Solve for x
    x = 7,693,087,442.65/90,375.67
  6. Step 6: Final answer
    x = 85,123.43

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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.