Home / 83,821.52-115,721.52-55,565.48

Finding the Fourth Proportional to 83,821.52, 115,721.52 and 55,565.48

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Solution

The fourth proportional to 83,821.52, 115,721.52 and 55,565.48 is: 76,712.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,821.52 : 115,721.52 = 55,565.48 : x
  2. Step 2: Convert to fraction form
    83,821.52/115,721.52 = 55,565.48/x
  3. Step 3: Cross multiply
    83,821.52x = 115,721.52 × 55,565.48
  4. Step 4: Simplify right side
    83,821.52x = 6,430,121,805.13
  5. Step 5: Solve for x
    x = 6,430,121,805.13/83,821.52
  6. Step 6: Final answer
    x = 76,712.06

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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.