Home / 89,641.20-123,705.70-49,355.78

Finding the Fourth Proportional to 89,641.20, 123,705.70 and 49,355.78

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Solution

The fourth proportional to 89,641.20, 123,705.70 and 49,355.78 is: 68,111.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,641.20 : 123,705.70 = 49,355.78 : x
  2. Step 2: Convert to fraction form
    89,641.20/123,705.70 = 49,355.78/x
  3. Step 3: Cross multiply
    89,641.20x = 123,705.70 × 49,355.78
  4. Step 4: Simplify right side
    89,641.20x = 6,105,591,313.95
  5. Step 5: Solve for x
    x = 6,105,591,313.95/89,641.20
  6. Step 6: Final answer
    x = 68,111.44

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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.