Home / 87,388.40-131,014.56-40,635.20

Finding the Fourth Proportional to 87,388.40, 131,014.56 and 40,635.20

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Solution

The fourth proportional to 87,388.40, 131,014.56 and 40,635.20 is: 60,921.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,388.40 : 131,014.56 = 40,635.20 : x
  2. Step 2: Convert to fraction form
    87,388.40/131,014.56 = 40,635.20/x
  3. Step 3: Cross multiply
    87,388.40x = 131,014.56 × 40,635.20
  4. Step 4: Simplify right side
    87,388.40x = 5,323,802,848.51
  5. Step 5: Solve for x
    x = 5,323,802,848.51/87,388.40
  6. Step 6: Final answer
    x = 60,921.16

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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.