Home / 87,112.20-130,636.93-30,170.68

Finding the Fourth Proportional to 87,112.20, 130,636.93 and 30,170.68

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Solution

The fourth proportional to 87,112.20, 130,636.93 and 30,170.68 is: 45,245.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,112.20 : 130,636.93 = 30,170.68 : x
  2. Step 2: Convert to fraction form
    87,112.20/130,636.93 = 30,170.68/x
  3. Step 3: Cross multiply
    87,112.20x = 130,636.93 × 30,170.68
  4. Step 4: Simplify right side
    87,112.20x = 3,941,405,011.21
  5. Step 5: Solve for x
    x = 3,941,405,011.21/87,112.20
  6. Step 6: Final answer
    x = 45,245.16

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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.