Home / 87,909.12-121,312.92-50,182.56

Finding the Fourth Proportional to 87,909.12, 121,312.92 and 50,182.56

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Solution

The fourth proportional to 87,909.12, 121,312.92 and 50,182.56 is: 69,250.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909.12 : 121,312.92 = 50,182.56 : x
  2. Step 2: Convert to fraction form
    87,909.12/121,312.92 = 50,182.56/x
  3. Step 3: Cross multiply
    87,909.12x = 121,312.92 × 50,182.56
  4. Step 4: Simplify right side
    87,909.12x = 6,087,792,886.68
  5. Step 5: Solve for x
    x = 6,087,792,886.68/87,909.12
  6. Step 6: Final answer
    x = 69,250.98

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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.