Home / 87,221.18-130,748.72-28,015.34

Finding the Fourth Proportional to 87,221.18, 130,748.72 and 28,015.34

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Solution

The fourth proportional to 87,221.18, 130,748.72 and 28,015.34 is: 41,996.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,221.18 : 130,748.72 = 28,015.34 : x
  2. Step 2: Convert to fraction form
    87,221.18/130,748.72 = 28,015.34/x
  3. Step 3: Cross multiply
    87,221.18x = 130,748.72 × 28,015.34
  4. Step 4: Simplify right side
    87,221.18x = 3,662,969,051.54
  5. Step 5: Solve for x
    x = 3,662,969,051.54/87,221.18
  6. Step 6: Final answer
    x = 41,996.33

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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.