Home / 89,543.78-123,570.70-49,260.60

Finding the Fourth Proportional to 89,543.78, 123,570.70 and 49,260.60

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Solution

The fourth proportional to 89,543.78, 123,570.70 and 49,260.60 is: 67,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,543.78 : 123,570.70 = 49,260.60 : x
  2. Step 2: Convert to fraction form
    89,543.78/123,570.70 = 49,260.60/x
  3. Step 3: Cross multiply
    89,543.78x = 123,570.70 × 49,260.60
  4. Step 4: Simplify right side
    89,543.78x = 6,087,166,824.42
  5. Step 5: Solve for x
    x = 6,087,166,824.42/89,543.78
  6. Step 6: Final answer
    x = 67,979.78

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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.