Home / 74,042.40-110,998.80-66,169.20

Finding the Fourth Proportional to 74,042.40, 110,998.80 and 66,169.20

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Solution

The fourth proportional to 74,042.40, 110,998.80 and 66,169.20 is: 99,195.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,042.40 : 110,998.80 = 66,169.20 : x
  2. Step 2: Convert to fraction form
    74,042.40/110,998.80 = 66,169.20/x
  3. Step 3: Cross multiply
    74,042.40x = 110,998.80 × 66,169.20
  4. Step 4: Simplify right side
    74,042.40x = 7,344,701,796.96
  5. Step 5: Solve for x
    x = 7,344,701,796.96/74,042.40
  6. Step 6: Final answer
    x = 99,195.89

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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.