Home / 87,043.78-130,363.17-84,649.33

Finding the Fourth Proportional to 87,043.78, 130,363.17 and 84,649.33

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Solution

The fourth proportional to 87,043.78, 130,363.17 and 84,649.33 is: 126,777.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,043.78 : 130,363.17 = 84,649.33 : x
  2. Step 2: Convert to fraction form
    87,043.78/130,363.17 = 84,649.33/x
  3. Step 3: Cross multiply
    87,043.78x = 130,363.17 × 84,649.33
  4. Step 4: Simplify right side
    87,043.78x = 11,035,155,318.85
  5. Step 5: Solve for x
    x = 11,035,155,318.85/87,043.78
  6. Step 6: Final answer
    x = 126,777.07

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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.