Home / 87,771.47-131,660.84-28,607.65

Finding the Fourth Proportional to 87,771.47, 131,660.84 and 28,607.65

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Solution

The fourth proportional to 87,771.47, 131,660.84 and 28,607.65 is: 42,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,771.47 : 131,660.84 = 28,607.65 : x
  2. Step 2: Convert to fraction form
    87,771.47/131,660.84 = 28,607.65/x
  3. Step 3: Cross multiply
    87,771.47x = 131,660.84 × 28,607.65
  4. Step 4: Simplify right side
    87,771.47x = 3,766,506,971.79
  5. Step 5: Solve for x
    x = 3,766,506,971.79/87,771.47
  6. Step 6: Final answer
    x = 42,912.66

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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.