Home / 87,089.20-120,187.85-48,860.86

Finding the Fourth Proportional to 87,089.20, 120,187.85 and 48,860.86

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Solution

The fourth proportional to 87,089.20, 120,187.85 and 48,860.86 is: 67,430.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,089.20 : 120,187.85 = 48,860.86 : x
  2. Step 2: Convert to fraction form
    87,089.20/120,187.85 = 48,860.86/x
  3. Step 3: Cross multiply
    87,089.20x = 120,187.85 × 48,860.86
  4. Step 4: Simplify right side
    87,089.20x = 5,872,481,712.55
  5. Step 5: Solve for x
    x = 5,872,481,712.55/87,089.20
  6. Step 6: Final answer
    x = 67,430.65

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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.