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Finding the Fourth Proportional to 87,354, 120,567.96 and 55,516.68

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Solution

The fourth proportional to 87,354, 120,567.96 and 55,516.68 is: 76,625.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,354 : 120,567.96 = 55,516.68 : x
  2. Step 2: Convert to fraction form
    87,354/120,567.96 = 55,516.68/x
  3. Step 3: Cross multiply
    87,354x = 120,567.96 × 55,516.68
  4. Step 4: Simplify right side
    87,354x = 6,693,532,853.57
  5. Step 5: Solve for x
    x = 6,693,532,853.57/87,354
  6. Step 6: Final answer
    x = 76,625.37

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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.