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Finding the Fourth Proportional to 87,592.59, 120,859.70 and 55,749.87

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Solution

The fourth proportional to 87,592.59, 120,859.70 and 55,749.87 is: 76,923.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,592.59 : 120,859.70 = 55,749.87 : x
  2. Step 2: Convert to fraction form
    87,592.59/120,859.70 = 55,749.87/x
  3. Step 3: Cross multiply
    87,592.59x = 120,859.70 × 55,749.87
  4. Step 4: Simplify right side
    87,592.59x = 6,737,912,284.49
  5. Step 5: Solve for x
    x = 6,737,912,284.49/87,592.59
  6. Step 6: Final answer
    x = 76,923.31

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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.