Home / 90,545.38-135,830.45-34,391.39

Finding the Fourth Proportional to 90,545.38, 135,830.45 and 34,391.39

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Solution

The fourth proportional to 90,545.38, 135,830.45 and 34,391.39 is: 51,591.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,545.38 : 135,830.45 = 34,391.39 : x
  2. Step 2: Convert to fraction form
    90,545.38/135,830.45 = 34,391.39/x
  3. Step 3: Cross multiply
    90,545.38x = 135,830.45 × 34,391.39
  4. Step 4: Simplify right side
    90,545.38x = 4,671,397,386.65
  5. Step 5: Solve for x
    x = 4,671,397,386.65/90,545.38
  6. Step 6: Final answer
    x = 51,591.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.