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Finding the Fourth Proportional to 83,986.80, 126,037.80 and 37,273.20

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Solution

The fourth proportional to 83,986.80, 126,037.80 and 37,273.20 is: 55,935.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,986.80 : 126,037.80 = 37,273.20 : x
  2. Step 2: Convert to fraction form
    83,986.80/126,037.80 = 37,273.20/x
  3. Step 3: Cross multiply
    83,986.80x = 126,037.80 × 37,273.20
  4. Step 4: Simplify right side
    83,986.80x = 4,697,832,126.96
  5. Step 5: Solve for x
    x = 4,697,832,126.96/83,986.80
  6. Step 6: Final answer
    x = 55,935.36

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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.