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Finding the Fourth Proportional to 89,424.80, 123,398.84 and 49,136.48

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Solution

The fourth proportional to 89,424.80, 123,398.84 and 49,136.48 is: 67,804.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,424.80 : 123,398.84 = 49,136.48 : x
  2. Step 2: Convert to fraction form
    89,424.80/123,398.84 = 49,136.48/x
  3. Step 3: Cross multiply
    89,424.80x = 123,398.84 × 49,136.48
  4. Step 4: Simplify right side
    89,424.80x = 6,063,384,633.68
  5. Step 5: Solve for x
    x = 6,063,384,633.68/89,424.80
  6. Step 6: Final answer
    x = 67,804.29

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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.