Home / 87,398.28-120,609.21-49,672.50

Finding the Fourth Proportional to 87,398.28, 120,609.21 and 49,672.50

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Solution

The fourth proportional to 87,398.28, 120,609.21 and 49,672.50 is: 68,547.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,398.28 : 120,609.21 = 49,672.50 : x
  2. Step 2: Convert to fraction form
    87,398.28/120,609.21 = 49,672.50/x
  3. Step 3: Cross multiply
    87,398.28x = 120,609.21 × 49,672.50
  4. Step 4: Simplify right side
    87,398.28x = 5,990,960,983.73
  5. Step 5: Solve for x
    x = 5,990,960,983.73/87,398.28
  6. Step 6: Final answer
    x = 68,547.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.