Home / 87,310.17-120,502.53-51,508.98

Finding the Fourth Proportional to 87,310.17, 120,502.53 and 51,508.98

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Solution

The fourth proportional to 87,310.17, 120,502.53 and 51,508.98 is: 71,090.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,310.17 : 120,502.53 = 51,508.98 : x
  2. Step 2: Convert to fraction form
    87,310.17/120,502.53 = 51,508.98/x
  3. Step 3: Cross multiply
    87,310.17x = 120,502.53 × 51,508.98
  4. Step 4: Simplify right side
    87,310.17x = 6,206,962,407.72
  5. Step 5: Solve for x
    x = 6,206,962,407.72/87,310.17
  6. Step 6: Final answer
    x = 71,090.94

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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.