Home / 87,739.70-131,580.10-28,561.46

Finding the Fourth Proportional to 87,739.70, 131,580.10 and 28,561.46

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Solution

The fourth proportional to 87,739.70, 131,580.10 and 28,561.46 is: 42,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,739.70 : 131,580.10 = 28,561.46 : x
  2. Step 2: Convert to fraction form
    87,739.70/131,580.10 = 28,561.46/x
  3. Step 3: Cross multiply
    87,739.70x = 131,580.10 × 28,561.46
  4. Step 4: Simplify right side
    87,739.70x = 3,758,119,762.95
  5. Step 5: Solve for x
    x = 3,758,119,762.95/87,739.70
  6. Step 6: Final answer
    x = 42,832.60

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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.