Home / 87,938.10-131,874.84-30,218.98

Finding the Fourth Proportional to 87,938.10, 131,874.84 and 30,218.98

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Solution

The fourth proportional to 87,938.10, 131,874.84 and 30,218.98 is: 45,317.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,938.10 : 131,874.84 = 30,218.98 : x
  2. Step 2: Convert to fraction form
    87,938.10/131,874.84 = 30,218.98/x
  3. Step 3: Cross multiply
    87,938.10x = 131,874.84 × 30,218.98
  4. Step 4: Simplify right side
    87,938.10x = 3,985,122,822.78
  5. Step 5: Solve for x
    x = 3,985,122,822.78/87,938.10
  6. Step 6: Final answer
    x = 45,317.36

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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.