Home / 87,977.16-121,410-50,251.68

Finding the Fourth Proportional to 87,977.16, 121,410 and 50,251.68

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Solution

The fourth proportional to 87,977.16, 121,410 and 50,251.68 is: 69,348.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,977.16 : 121,410 = 50,251.68 : x
  2. Step 2: Convert to fraction form
    87,977.16/121,410 = 50,251.68/x
  3. Step 3: Cross multiply
    87,977.16x = 121,410 × 50,251.68
  4. Step 4: Simplify right side
    87,977.16x = 6,101,056,468.80
  5. Step 5: Solve for x
    x = 6,101,056,468.80/87,977.16
  6. Step 6: Final answer
    x = 69,348.19

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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.