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Finding the Fourth Proportional to 62,939.38, 86,854.65 and 34,645.15

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Solution

The fourth proportional to 62,939.38, 86,854.65 and 34,645.15 is: 47,809.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,939.38 : 86,854.65 = 34,645.15 : x
  2. Step 2: Convert to fraction form
    62,939.38/86,854.65 = 34,645.15/x
  3. Step 3: Cross multiply
    62,939.38x = 86,854.65 × 34,645.15
  4. Step 4: Simplify right side
    62,939.38x = 3,009,092,377.45
  5. Step 5: Solve for x
    x = 3,009,092,377.45/62,939.38
  6. Step 6: Final answer
    x = 47,809.37

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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.