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Finding the Fourth Proportional to 62,545.71, 86,326.47 and 39,879.48

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Solution

The fourth proportional to 62,545.71, 86,326.47 and 39,879.48 is: 55,042.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,545.71 : 86,326.47 = 39,879.48 : x
  2. Step 2: Convert to fraction form
    62,545.71/86,326.47 = 39,879.48/x
  3. Step 3: Cross multiply
    62,545.71x = 86,326.47 × 39,879.48
  4. Step 4: Simplify right side
    62,545.71x = 3,442,654,733.84
  5. Step 5: Solve for x
    x = 3,442,654,733.84/62,545.71
  6. Step 6: Final answer
    x = 55,042.22

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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.