Home / 87,399.45-131,101.92-28,235.66

Finding the Fourth Proportional to 87,399.45, 131,101.92 and 28,235.66

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Solution

The fourth proportional to 87,399.45, 131,101.92 and 28,235.66 is: 42,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,399.45 : 131,101.92 = 28,235.66 : x
  2. Step 2: Convert to fraction form
    87,399.45/131,101.92 = 28,235.66/x
  3. Step 3: Cross multiply
    87,399.45x = 131,101.92 × 28,235.66
  4. Step 4: Simplify right side
    87,399.45x = 3,701,748,582.96
  5. Step 5: Solve for x
    x = 3,701,748,582.96/87,399.45
  6. Step 6: Final answer
    x = 42,354.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.