Home / 87,113.20-130,638.43-30,171.68

Finding the Fourth Proportional to 87,113.20, 130,638.43 and 30,171.68

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Solution

The fourth proportional to 87,113.20, 130,638.43 and 30,171.68 is: 45,246.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,113.20 : 130,638.43 = 30,171.68 : x
  2. Step 2: Convert to fraction form
    87,113.20/130,638.43 = 30,171.68/x
  3. Step 3: Cross multiply
    87,113.20x = 130,638.43 × 30,171.68
  4. Step 4: Simplify right side
    87,113.20x = 3,941,580,905.66
  5. Step 5: Solve for x
    x = 3,941,580,905.66/87,113.20
  6. Step 6: Final answer
    x = 45,246.65

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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.