Home / 85,112.11-127,696.92-37,720.72

Finding the Fourth Proportional to 85,112.11, 127,696.92 and 37,720.72

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Solution

The fourth proportional to 85,112.11, 127,696.92 and 37,720.72 is: 56,593.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,112.11 : 127,696.92 = 37,720.72 : x
  2. Step 2: Convert to fraction form
    85,112.11/127,696.92 = 37,720.72/x
  3. Step 3: Cross multiply
    85,112.11x = 127,696.92 × 37,720.72
  4. Step 4: Simplify right side
    85,112.11x = 4,816,819,764.18
  5. Step 5: Solve for x
    x = 4,816,819,764.18/85,112.11
  6. Step 6: Final answer
    x = 56,593.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.