Home / 87,442.39-120,690.67-51,160.72

Finding the Fourth Proportional to 87,442.39, 120,690.67 and 51,160.72

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Solution

The fourth proportional to 87,442.39, 120,690.67 and 51,160.72 is: 70,613.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,442.39 : 120,690.67 = 51,160.72 : x
  2. Step 2: Convert to fraction form
    87,442.39/120,690.67 = 51,160.72/x
  3. Step 3: Cross multiply
    87,442.39x = 120,690.67 × 51,160.72
  4. Step 4: Simplify right side
    87,442.39x = 6,174,621,016.95
  5. Step 5: Solve for x
    x = 6,174,621,016.95/87,442.39
  6. Step 6: Final answer
    x = 70,613.59

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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.