Home / 76,721.92-115,104.48-29,988.16

Finding the Fourth Proportional to 76,721.92, 115,104.48 and 29,988.16

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Solution

The fourth proportional to 76,721.92, 115,104.48 and 29,988.16 is: 44,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,721.92 : 115,104.48 = 29,988.16 : x
  2. Step 2: Convert to fraction form
    76,721.92/115,104.48 = 29,988.16/x
  3. Step 3: Cross multiply
    76,721.92x = 115,104.48 × 29,988.16
  4. Step 4: Simplify right side
    76,721.92x = 3,451,771,562.96
  5. Step 5: Solve for x
    x = 3,451,771,562.96/76,721.92
  6. Step 6: Final answer
    x = 44,990.68

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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.