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Finding the Fourth Proportional to 89,672.68, 123,749.16 and 49,387.36

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Solution

The fourth proportional to 89,672.68, 123,749.16 and 49,387.36 is: 68,155.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,672.68 : 123,749.16 = 49,387.36 : x
  2. Step 2: Convert to fraction form
    89,672.68/123,749.16 = 49,387.36/x
  3. Step 3: Cross multiply
    89,672.68x = 123,749.16 × 49,387.36
  4. Step 4: Simplify right side
    89,672.68x = 6,111,644,314.62
  5. Step 5: Solve for x
    x = 6,111,644,314.62/89,672.68
  6. Step 6: Final answer
    x = 68,155.03

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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.