Home / 89,649.03-123,711.12-49,355.16

Finding the Fourth Proportional to 89,649.03, 123,711.12 and 49,355.16

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Solution

The fourth proportional to 89,649.03, 123,711.12 and 49,355.16 is: 68,107.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,649.03 : 123,711.12 = 49,355.16 : x
  2. Step 2: Convert to fraction form
    89,649.03/123,711.12 = 49,355.16/x
  3. Step 3: Cross multiply
    89,649.03x = 123,711.12 × 49,355.16
  4. Step 4: Simplify right side
    89,649.03x = 6,105,782,121.38
  5. Step 5: Solve for x
    x = 6,105,782,121.38/89,649.03
  6. Step 6: Final answer
    x = 68,107.62

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Double scale
Find fourth proportional to 89,650.03, 123,712.50 and 49,356.16
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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.