Home / 87,729-131,607.18-28,550.70

Finding the Fourth Proportional to 87,729, 131,607.18 and 28,550.70

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Solution

The fourth proportional to 87,729, 131,607.18 and 28,550.70 is: 42,830.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,729 : 131,607.18 = 28,550.70 : x
  2. Step 2: Convert to fraction form
    87,729/131,607.18 = 28,550.70/x
  3. Step 3: Cross multiply
    87,729x = 131,607.18 × 28,550.70
  4. Step 4: Simplify right side
    87,729x = 3,757,477,114.03
  5. Step 5: Solve for x
    x = 3,757,477,114.03/87,729
  6. Step 6: Final answer
    x = 42,830.50

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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.