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Finding the Fourth Proportional to 62,545.70, 86,326.46 and 39,879.47

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Solution

The fourth proportional to 62,545.70, 86,326.46 and 39,879.47 is: 55,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,545.70 : 86,326.46 = 39,879.47 : x
  2. Step 2: Convert to fraction form
    62,545.70/86,326.46 = 39,879.47/x
  3. Step 3: Cross multiply
    62,545.70x = 86,326.46 × 39,879.47
  4. Step 4: Simplify right side
    62,545.70x = 3,442,652,840.75
  5. Step 5: Solve for x
    x = 3,442,652,840.75/62,545.70
  6. Step 6: Final answer
    x = 55,042.20

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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.