Home / 87,762.72-131,929.20-70,422.24

Finding the Fourth Proportional to 87,762.72, 131,929.20 and 70,422.24

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Solution

The fourth proportional to 87,762.72, 131,929.20 and 70,422.24 is: 105,862.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,762.72 : 131,929.20 = 70,422.24 : x
  2. Step 2: Convert to fraction form
    87,762.72/131,929.20 = 70,422.24/x
  3. Step 3: Cross multiply
    87,762.72x = 131,929.20 × 70,422.24
  4. Step 4: Simplify right side
    87,762.72x = 9,290,749,785.41
  5. Step 5: Solve for x
    x = 9,290,749,785.41/87,762.72
  6. Step 6: Final answer
    x = 105,862.14

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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.