Home / 87,983.52-121,418.16-47,697.36

Finding the Fourth Proportional to 87,983.52, 121,418.16 and 47,697.36

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Solution

The fourth proportional to 87,983.52, 121,418.16 and 47,697.36 is: 65,822.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,983.52 : 121,418.16 = 47,697.36 : x
  2. Step 2: Convert to fraction form
    87,983.52/121,418.16 = 47,697.36/x
  3. Step 3: Cross multiply
    87,983.52x = 121,418.16 × 47,697.36
  4. Step 4: Simplify right side
    87,983.52x = 5,791,325,688.06
  5. Step 5: Solve for x
    x = 5,791,325,688.06/87,983.52
  6. Step 6: Final answer
    x = 65,822.85

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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.