Home / 87,031.28-120,110.84-51,232.52

Finding the Fourth Proportional to 87,031.28, 120,110.84 and 51,232.52

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Solution

The fourth proportional to 87,031.28, 120,110.84 and 51,232.52 is: 70,705.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,031.28 : 120,110.84 = 51,232.52 : x
  2. Step 2: Convert to fraction form
    87,031.28/120,110.84 = 51,232.52/x
  3. Step 3: Cross multiply
    87,031.28x = 120,110.84 × 51,232.52
  4. Step 4: Simplify right side
    87,031.28x = 6,153,580,155.80
  5. Step 5: Solve for x
    x = 6,153,580,155.80/87,031.28
  6. Step 6: Final answer
    x = 70,705.39

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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.