Home / 87,721.40-131,495.70-43,311.80

Finding the Fourth Proportional to 87,721.40, 131,495.70 and 43,311.80

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Solution

The fourth proportional to 87,721.40, 131,495.70 and 43,311.80 is: 64,925.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,721.40 : 131,495.70 = 43,311.80 : x
  2. Step 2: Convert to fraction form
    87,721.40/131,495.70 = 43,311.80/x
  3. Step 3: Cross multiply
    87,721.40x = 131,495.70 × 43,311.80
  4. Step 4: Simplify right side
    87,721.40x = 5,695,315,459.26
  5. Step 5: Solve for x
    x = 5,695,315,459.26/87,721.40
  6. Step 6: Final answer
    x = 64,925.04

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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.