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Finding the Fourth Proportional to 87,673.57, 120,989.49 and 47,387.33

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Solution

The fourth proportional to 87,673.57, 120,989.49 and 47,387.33 is: 65,394.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,673.57 : 120,989.49 = 47,387.33 : x
  2. Step 2: Convert to fraction form
    87,673.57/120,989.49 = 47,387.33/x
  3. Step 3: Cross multiply
    87,673.57x = 120,989.49 × 47,387.33
  4. Step 4: Simplify right side
    87,673.57x = 5,733,368,889.16
  5. Step 5: Solve for x
    x = 5,733,368,889.16/87,673.57
  6. Step 6: Final answer
    x = 65,394.50

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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.