Home / 83,815.72-115,607.11-55,126.39

Finding the Fourth Proportional to 83,815.72, 115,607.11 and 55,126.39

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Solution

The fourth proportional to 83,815.72, 115,607.11 and 55,126.39 is: 76,035.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,815.72 : 115,607.11 = 55,126.39 : x
  2. Step 2: Convert to fraction form
    83,815.72/115,607.11 = 55,126.39/x
  3. Step 3: Cross multiply
    83,815.72x = 115,607.11 × 55,126.39
  4. Step 4: Simplify right side
    83,815.72x = 6,373,002,632.63
  5. Step 5: Solve for x
    x = 6,373,002,632.63/83,815.72
  6. Step 6: Final answer
    x = 76,035.89

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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.