Home / 83,988.11-115,851.48-49,973.60

Finding the Fourth Proportional to 83,988.11, 115,851.48 and 49,973.60

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Solution

The fourth proportional to 83,988.11, 115,851.48 and 49,973.60 is: 68,932.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,988.11 : 115,851.48 = 49,973.60 : x
  2. Step 2: Convert to fraction form
    83,988.11/115,851.48 = 49,973.60/x
  3. Step 3: Cross multiply
    83,988.11x = 115,851.48 × 49,973.60
  4. Step 4: Simplify right side
    83,988.11x = 5,789,515,520.93
  5. Step 5: Solve for x
    x = 5,789,515,520.93/83,988.11
  6. Step 6: Final answer
    x = 68,932.56

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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.