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Finding the Fourth Proportional to 89,272, 123,195.36 and 49,528

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Solution

The fourth proportional to 89,272, 123,195.36 and 49,528 is: 68,348.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,272 : 123,195.36 = 49,528 : x
  2. Step 2: Convert to fraction form
    89,272/123,195.36 = 49,528/x
  3. Step 3: Cross multiply
    89,272x = 123,195.36 × 49,528
  4. Step 4: Simplify right side
    89,272x = 6,101,619,790.08
  5. Step 5: Solve for x
    x = 6,101,619,790.08/89,272
  6. Step 6: Final answer
    x = 68,348.64

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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.