Home / 87,006.92-120,067.08-51,188.72

Finding the Fourth Proportional to 87,006.92, 120,067.08 and 51,188.72

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Solution

The fourth proportional to 87,006.92, 120,067.08 and 51,188.72 is: 70,638.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,006.92 : 120,067.08 = 51,188.72 : x
  2. Step 2: Convert to fraction form
    87,006.92/120,067.08 = 51,188.72/x
  3. Step 3: Cross multiply
    87,006.92x = 120,067.08 × 51,188.72
  4. Step 4: Simplify right side
    87,006.92x = 6,146,080,139.34
  5. Step 5: Solve for x
    x = 6,146,080,139.34/87,006.92
  6. Step 6: Final answer
    x = 70,638.98

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1.5x scale

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.