Home / 87,770.72-131,941.20-70,430.24

Finding the Fourth Proportional to 87,770.72, 131,941.20 and 70,430.24

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Solution

The fourth proportional to 87,770.72, 131,941.20 and 70,430.24 is: 105,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,770.72 : 131,941.20 = 70,430.24 : x
  2. Step 2: Convert to fraction form
    87,770.72/131,941.20 = 70,430.24/x
  3. Step 3: Cross multiply
    87,770.72x = 131,941.20 × 70,430.24
  4. Step 4: Simplify right side
    87,770.72x = 9,292,650,381.89
  5. Step 5: Solve for x
    x = 9,292,650,381.89/87,770.72
  6. Step 6: Final answer
    x = 105,874.15

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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.