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Finding the Fourth Proportional to 87,167.70, 130,756.20 and 27,998.76

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Solution

The fourth proportional to 87,167.70, 130,756.20 and 27,998.76 is: 41,999.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,167.70 : 130,756.20 = 27,998.76 : x
  2. Step 2: Convert to fraction form
    87,167.70/130,756.20 = 27,998.76/x
  3. Step 3: Cross multiply
    87,167.70x = 130,756.20 × 27,998.76
  4. Step 4: Simplify right side
    87,167.70x = 3,661,011,462.31
  5. Step 5: Solve for x
    x = 3,661,011,462.31/87,167.70
  6. Step 6: Final answer
    x = 41,999.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.