Home / 76,587.26-114,865.70-72,789.71

Finding the Fourth Proportional to 76,587.26, 114,865.70 and 72,789.71

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Solution

The fourth proportional to 76,587.26, 114,865.70 and 72,789.71 is: 109,170.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,587.26 : 114,865.70 = 72,789.71 : x
  2. Step 2: Convert to fraction form
    76,587.26/114,865.70 = 72,789.71/x
  3. Step 3: Cross multiply
    76,587.26x = 114,865.70 × 72,789.71
  4. Step 4: Simplify right side
    76,587.26x = 8,361,040,053.67
  5. Step 5: Solve for x
    x = 8,361,040,053.67/76,587.26
  6. Step 6: Final answer
    x = 109,170.12

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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.