Home / 87,266.25-120,438.72-53,267.61

Finding the Fourth Proportional to 87,266.25, 120,438.72 and 53,267.61

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Solution

The fourth proportional to 87,266.25, 120,438.72 and 53,267.61 is: 73,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,266.25 : 120,438.72 = 53,267.61 : x
  2. Step 2: Convert to fraction form
    87,266.25/120,438.72 = 53,267.61/x
  3. Step 3: Cross multiply
    87,266.25x = 120,438.72 × 53,267.61
  4. Step 4: Simplify right side
    87,266.25x = 6,415,482,765.86
  5. Step 5: Solve for x
    x = 6,415,482,765.86/87,266.25
  6. Step 6: Final answer
    x = 73,516.20

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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.