Home / 83,668.98-115,422.66-55,398.36

Finding the Fourth Proportional to 83,668.98, 115,422.66 and 55,398.36

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Solution

The fourth proportional to 83,668.98, 115,422.66 and 55,398.36 is: 76,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,668.98 : 115,422.66 = 55,398.36 : x
  2. Step 2: Convert to fraction form
    83,668.98/115,422.66 = 55,398.36/x
  3. Step 3: Cross multiply
    83,668.98x = 115,422.66 × 55,398.36
  4. Step 4: Simplify right side
    83,668.98x = 6,394,226,070.84
  5. Step 5: Solve for x
    x = 6,394,226,070.84/83,668.98
  6. Step 6: Final answer
    x = 76,422.90

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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.