Home / 87,707.34-131,559.86-21,146.94

Finding the Fourth Proportional to 87,707.34, 131,559.86 and 21,146.94

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Solution

The fourth proportional to 87,707.34, 131,559.86 and 21,146.94 is: 31,720.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,707.34 : 131,559.86 = 21,146.94 : x
  2. Step 2: Convert to fraction form
    87,707.34/131,559.86 = 21,146.94/x
  3. Step 3: Cross multiply
    87,707.34x = 131,559.86 × 21,146.94
  4. Step 4: Simplify right side
    87,707.34x = 2,782,087,874.46
  5. Step 5: Solve for x
    x = 2,782,087,874.46/87,707.34
  6. Step 6: Final answer
    x = 31,720.12

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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.