Home / 87,965.55-121,408.71-50,239.80

Finding the Fourth Proportional to 87,965.55, 121,408.71 and 50,239.80

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Solution

The fourth proportional to 87,965.55, 121,408.71 and 50,239.80 is: 69,340.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,965.55 : 121,408.71 = 50,239.80 : x
  2. Step 2: Convert to fraction form
    87,965.55/121,408.71 = 50,239.80/x
  3. Step 3: Cross multiply
    87,965.55x = 121,408.71 × 50,239.80
  4. Step 4: Simplify right side
    87,965.55x = 6,099,549,308.66
  5. Step 5: Solve for x
    x = 6,099,549,308.66/87,965.55
  6. Step 6: Final answer
    x = 69,340.21

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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.