Home / 87,408.60-131,210.10-54,166.20

Finding the Fourth Proportional to 87,408.60, 131,210.10 and 54,166.20

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Solution

The fourth proportional to 87,408.60, 131,210.10 and 54,166.20 is: 81,309.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,408.60 : 131,210.10 = 54,166.20 : x
  2. Step 2: Convert to fraction form
    87,408.60/131,210.10 = 54,166.20/x
  3. Step 3: Cross multiply
    87,408.60x = 131,210.10 × 54,166.20
  4. Step 4: Simplify right side
    87,408.60x = 7,107,152,518.62
  5. Step 5: Solve for x
    x = 7,107,152,518.62/87,408.60
  6. Step 6: Final answer
    x = 81,309.53

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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.