Home / 115,105.12-172,677.92-47,636.96

Finding the Fourth Proportional to 115,105.12, 172,677.92 and 47,636.96

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Solution

The fourth proportional to 115,105.12, 172,677.92 and 47,636.96 is: 71,463.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,105.12 : 172,677.92 = 47,636.96 : x
  2. Step 2: Convert to fraction form
    115,105.12/172,677.92 = 47,636.96/x
  3. Step 3: Cross multiply
    115,105.12x = 172,677.92 × 47,636.96
  4. Step 4: Simplify right side
    115,105.12x = 8,225,851,167.92
  5. Step 5: Solve for x
    x = 8,225,851,167.92/115,105.12
  6. Step 6: Final answer
    x = 71,463.82

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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.