Home / 87,420.24-120,636.16-49,179.13

Finding the Fourth Proportional to 87,420.24, 120,636.16 and 49,179.13

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Solution

The fourth proportional to 87,420.24, 120,636.16 and 49,179.13 is: 67,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,420.24 : 120,636.16 = 49,179.13 : x
  2. Step 2: Convert to fraction form
    87,420.24/120,636.16 = 49,179.13/x
  3. Step 3: Cross multiply
    87,420.24x = 120,636.16 × 49,179.13
  4. Step 4: Simplify right side
    87,420.24x = 5,932,781,395.34
  5. Step 5: Solve for x
    x = 5,932,781,395.34/87,420.24
  6. Step 6: Final answer
    x = 67,865.08

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1.5x scale

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.