Home / 78,369.27-117,568.49-25,780.83

Finding the Fourth Proportional to 78,369.27, 117,568.49 and 25,780.83

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Solution

The fourth proportional to 78,369.27, 117,568.49 and 25,780.83 is: 38,676.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,369.27 : 117,568.49 = 25,780.83 : x
  2. Step 2: Convert to fraction form
    78,369.27/117,568.49 = 25,780.83/x
  3. Step 3: Cross multiply
    78,369.27x = 117,568.49 × 25,780.83
  4. Step 4: Simplify right side
    78,369.27x = 3,031,013,254.05
  5. Step 5: Solve for x
    x = 3,031,013,254.05/78,369.27
  6. Step 6: Final answer
    x = 38,676.04

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1.5x scale

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.