Home / 87,842.70-131,776.83-28,663.80

Finding the Fourth Proportional to 87,842.70, 131,776.83 and 28,663.80

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Solution

The fourth proportional to 87,842.70, 131,776.83 and 28,663.80 is: 42,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,842.70 : 131,776.83 = 28,663.80 : x
  2. Step 2: Convert to fraction form
    87,842.70/131,776.83 = 28,663.80/x
  3. Step 3: Cross multiply
    87,842.70x = 131,776.83 × 28,663.80
  4. Step 4: Simplify right side
    87,842.70x = 3,777,224,699.75
  5. Step 5: Solve for x
    x = 3,777,224,699.75/87,842.70
  6. Step 6: Final answer
    x = 42,999.87

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1.5x scale

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.