Home / 87,983.72-121,418.39-47,697.39

Finding the Fourth Proportional to 87,983.72, 121,418.39 and 47,697.39

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Solution

The fourth proportional to 87,983.72, 121,418.39 and 47,697.39 is: 65,822.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,983.72 : 121,418.39 = 47,697.39 : x
  2. Step 2: Convert to fraction form
    87,983.72/121,418.39 = 47,697.39/x
  3. Step 3: Cross multiply
    87,983.72x = 121,418.39 × 47,697.39
  4. Step 4: Simplify right side
    87,983.72x = 5,791,340,420.25
  5. Step 5: Solve for x
    x = 5,791,340,420.25/87,983.72
  6. Step 6: Final answer
    x = 65,822.86

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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.