Home / 87,586.45-131,379.68-21,026.58

Finding the Fourth Proportional to 87,586.45, 131,379.68 and 21,026.58

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Solution

The fourth proportional to 87,586.45, 131,379.68 and 21,026.58 is: 31,539.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,586.45 : 131,379.68 = 21,026.58 : x
  2. Step 2: Convert to fraction form
    87,586.45/131,379.68 = 21,026.58/x
  3. Step 3: Cross multiply
    87,586.45x = 131,379.68 × 21,026.58
  4. Step 4: Simplify right side
    87,586.45x = 2,762,465,351.89
  5. Step 5: Solve for x
    x = 2,762,465,351.89/87,586.45
  6. Step 6: Final answer
    x = 31,539.87

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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.