Home / 87,768.56-131,627.70-28,609.40

Finding the Fourth Proportional to 87,768.56, 131,627.70 and 28,609.40

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Solution

The fourth proportional to 87,768.56, 131,627.70 and 28,609.40 is: 42,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,768.56 : 131,627.70 = 28,609.40 : x
  2. Step 2: Convert to fraction form
    87,768.56/131,627.70 = 28,609.40/x
  3. Step 3: Cross multiply
    87,768.56x = 131,627.70 × 28,609.40
  4. Step 4: Simplify right side
    87,768.56x = 3,765,788,862.24
  5. Step 5: Solve for x
    x = 3,765,788,862.24/87,768.56
  6. Step 6: Final answer
    x = 42,905.90

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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.