Home / 76,701.38-115,057.31-26,079.80

Finding the Fourth Proportional to 76,701.38, 115,057.31 and 26,079.80

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Solution

The fourth proportional to 76,701.38, 115,057.31 and 26,079.80 is: 39,121.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,701.38 : 115,057.31 = 26,079.80 : x
  2. Step 2: Convert to fraction form
    76,701.38/115,057.31 = 26,079.80/x
  3. Step 3: Cross multiply
    76,701.38x = 115,057.31 × 26,079.80
  4. Step 4: Simplify right side
    76,701.38x = 3,000,671,037.68
  5. Step 5: Solve for x
    x = 3,000,671,037.68/76,701.38
  6. Step 6: Final answer
    x = 39,121.48

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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.