Home / 87,732.64-131,618.40-40,960

Finding the Fourth Proportional to 87,732.64, 131,618.40 and 40,960

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Solution

The fourth proportional to 87,732.64, 131,618.40 and 40,960 is: 61,449.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,732.64 : 131,618.40 = 40,960 : x
  2. Step 2: Convert to fraction form
    87,732.64/131,618.40 = 40,960/x
  3. Step 3: Cross multiply
    87,732.64x = 131,618.40 × 40,960
  4. Step 4: Simplify right side
    87,732.64x = 5,391,089,664
  5. Step 5: Solve for x
    x = 5,391,089,664/87,732.64
  6. Step 6: Final answer
    x = 61,449.08

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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.