Home / 54,819.60-82,261.80-39,991.20

Finding the Fourth Proportional to 54,819.60, 82,261.80 and 39,991.20

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Solution

The fourth proportional to 54,819.60, 82,261.80 and 39,991.20 is: 60,010.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,819.60 : 82,261.80 = 39,991.20 : x
  2. Step 2: Convert to fraction form
    54,819.60/82,261.80 = 39,991.20/x
  3. Step 3: Cross multiply
    54,819.60x = 82,261.80 × 39,991.20
  4. Step 4: Simplify right side
    54,819.60x = 3,289,748,096.16
  5. Step 5: Solve for x
    x = 3,289,748,096.16/54,819.60
  6. Step 6: Final answer
    x = 60,010.44

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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.