Home / 83,839.92-115,654.50-63,663.36

Finding the Fourth Proportional to 83,839.92, 115,654.50 and 63,663.36

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Solution

The fourth proportional to 83,839.92, 115,654.50 and 63,663.36 is: 87,821.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,839.92 : 115,654.50 = 63,663.36 : x
  2. Step 2: Convert to fraction form
    83,839.92/115,654.50 = 63,663.36/x
  3. Step 3: Cross multiply
    83,839.92x = 115,654.50 × 63,663.36
  4. Step 4: Simplify right side
    83,839.92x = 7,362,954,069.12
  5. Step 5: Solve for x
    x = 7,362,954,069.12/83,839.92
  6. Step 6: Final answer
    x = 87,821.58

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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.