Home / 87,319.17-120,514.95-51,517.98

Finding the Fourth Proportional to 87,319.17, 120,514.95 and 51,517.98

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Solution

The fourth proportional to 87,319.17, 120,514.95 and 51,517.98 is: 71,103.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,319.17 : 120,514.95 = 51,517.98 : x
  2. Step 2: Convert to fraction form
    87,319.17/120,514.95 = 51,517.98/x
  3. Step 3: Cross multiply
    87,319.17x = 120,514.95 × 51,517.98
  4. Step 4: Simplify right side
    87,319.17x = 6,208,686,783.80
  5. Step 5: Solve for x
    x = 6,208,686,783.80/87,319.17
  6. Step 6: Final answer
    x = 71,103.36

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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.