Home / 87,679.47-120,997.59-47,393.23

Finding the Fourth Proportional to 87,679.47, 120,997.59 and 47,393.23

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Solution

The fourth proportional to 87,679.47, 120,997.59 and 47,393.23 is: 65,402.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,679.47 : 120,997.59 = 47,393.23 : x
  2. Step 2: Convert to fraction form
    87,679.47/120,997.59 = 47,393.23/x
  3. Step 3: Cross multiply
    87,679.47x = 120,997.59 × 47,393.23
  4. Step 4: Simplify right side
    87,679.47x = 5,734,466,612.32
  5. Step 5: Solve for x
    x = 5,734,466,612.32/87,679.47
  6. Step 6: Final answer
    x = 65,402.61

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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.