Home / 87,031.38-120,102.26-48,790.74

Finding the Fourth Proportional to 87,031.38, 120,102.26 and 48,790.74

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Solution

The fourth proportional to 87,031.38, 120,102.26 and 48,790.74 is: 67,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,031.38 : 120,102.26 = 48,790.74 : x
  2. Step 2: Convert to fraction form
    87,031.38/120,102.26 = 48,790.74/x
  3. Step 3: Cross multiply
    87,031.38x = 120,102.26 × 48,790.74
  4. Step 4: Simplify right side
    87,031.38x = 5,859,878,141.07
  5. Step 5: Solve for x
    x = 5,859,878,141.07/87,031.38
  6. Step 6: Final answer
    x = 67,330.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.