Home / 87,627.40-131,441.10-86,705.80

Finding the Fourth Proportional to 87,627.40, 131,441.10 and 86,705.80

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Solution

The fourth proportional to 87,627.40, 131,441.10 and 86,705.80 is: 130,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,627.40 : 131,441.10 = 86,705.80 : x
  2. Step 2: Convert to fraction form
    87,627.40/131,441.10 = 86,705.80/x
  3. Step 3: Cross multiply
    87,627.40x = 131,441.10 × 86,705.80
  4. Step 4: Simplify right side
    87,627.40x = 11,396,705,728.38
  5. Step 5: Solve for x
    x = 11,396,705,728.38/87,627.40
  6. Step 6: Final answer
    x = 130,058.70

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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.