Home / 87,031.52-120,103.08-49,305.68

Finding the Fourth Proportional to 87,031.52, 120,103.08 and 49,305.68

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Solution

The fourth proportional to 87,031.52, 120,103.08 and 49,305.68 is: 68,041.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,031.52 : 120,103.08 = 49,305.68 : x
  2. Step 2: Convert to fraction form
    87,031.52/120,103.08 = 49,305.68/x
  3. Step 3: Cross multiply
    87,031.52x = 120,103.08 × 49,305.68
  4. Step 4: Simplify right side
    87,031.52x = 5,921,764,029.49
  5. Step 5: Solve for x
    x = 5,921,764,029.49/87,031.52
  6. Step 6: Final answer
    x = 68,041.60

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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.