Home / 78,650.20-118,052.10-39,251.80

Finding the Fourth Proportional to 78,650.20, 118,052.10 and 39,251.80

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Solution

The fourth proportional to 78,650.20, 118,052.10 and 39,251.80 is: 58,916.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,650.20 : 118,052.10 = 39,251.80 : x
  2. Step 2: Convert to fraction form
    78,650.20/118,052.10 = 39,251.80/x
  3. Step 3: Cross multiply
    78,650.20x = 118,052.10 × 39,251.80
  4. Step 4: Simplify right side
    78,650.20x = 4,633,757,418.78
  5. Step 5: Solve for x
    x = 4,633,757,418.78/78,650.20
  6. Step 6: Final answer
    x = 58,916.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.