Home / 87,341.78-131,012.69-69,729.14

Finding the Fourth Proportional to 87,341.78, 131,012.69 and 69,729.14

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Solution

The fourth proportional to 87,341.78, 131,012.69 and 69,729.14 is: 104,593.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,341.78 : 131,012.69 = 69,729.14 : x
  2. Step 2: Convert to fraction form
    87,341.78/131,012.69 = 69,729.14/x
  3. Step 3: Cross multiply
    87,341.78x = 131,012.69 × 69,729.14
  4. Step 4: Simplify right side
    87,341.78x = 9,135,402,181.67
  5. Step 5: Solve for x
    x = 9,135,402,181.67/87,341.78
  6. Step 6: Final answer
    x = 104,593.72

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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.