Home / 87,077.12-130,512-60,638.72

Finding the Fourth Proportional to 87,077.12, 130,512 and 60,638.72

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Solution

The fourth proportional to 87,077.12, 130,512 and 60,638.72 is: 90,885.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,077.12 : 130,512 = 60,638.72 : x
  2. Step 2: Convert to fraction form
    87,077.12/130,512 = 60,638.72/x
  3. Step 3: Cross multiply
    87,077.12x = 130,512 × 60,638.72
  4. Step 4: Simplify right side
    87,077.12x = 7,914,080,624.64
  5. Step 5: Solve for x
    x = 7,914,080,624.64/87,077.12
  6. Step 6: Final answer
    x = 90,885.88

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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.