Home / 87,352.28-120,511.14-55,076.28

Finding the Fourth Proportional to 87,352.28, 120,511.14 and 55,076.28

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Solution

The fourth proportional to 87,352.28, 120,511.14 and 55,076.28 is: 75,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,352.28 : 120,511.14 = 55,076.28 : x
  2. Step 2: Convert to fraction form
    87,352.28/120,511.14 = 55,076.28/x
  3. Step 3: Cross multiply
    87,352.28x = 120,511.14 × 55,076.28
  4. Step 4: Simplify right side
    87,352.28x = 6,637,305,289.76
  5. Step 5: Solve for x
    x = 6,637,305,289.76/87,352.28
  6. Step 6: Final answer
    x = 75,983.19

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1.5x scale

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.