Home / 87,135.56-120,228.42-51,312.44

Finding the Fourth Proportional to 87,135.56, 120,228.42 and 51,312.44

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Solution

The fourth proportional to 87,135.56, 120,228.42 and 51,312.44 is: 70,800.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,135.56 : 120,228.42 = 51,312.44 : x
  2. Step 2: Convert to fraction form
    87,135.56/120,228.42 = 51,312.44/x
  3. Step 3: Cross multiply
    87,135.56x = 120,228.42 × 51,312.44
  4. Step 4: Simplify right side
    87,135.56x = 6,169,213,587.54
  5. Step 5: Solve for x
    x = 6,169,213,587.54/87,135.56
  6. Step 6: Final answer
    x = 70,800.18

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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.