Home / 87,909.76-121,312.24-50,182.40

Finding the Fourth Proportional to 87,909.76, 121,312.24 and 50,182.40

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Solution

The fourth proportional to 87,909.76, 121,312.24 and 50,182.40 is: 69,249.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909.76 : 121,312.24 = 50,182.40 : x
  2. Step 2: Convert to fraction form
    87,909.76/121,312.24 = 50,182.40/x
  3. Step 3: Cross multiply
    87,909.76x = 121,312.24 × 50,182.40
  4. Step 4: Simplify right side
    87,909.76x = 6,087,739,352.58
  5. Step 5: Solve for x
    x = 6,087,739,352.58/87,909.76
  6. Step 6: Final answer
    x = 69,249.87

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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.