Home / 79,161.54-109,243.08-42,863.38

Finding the Fourth Proportional to 79,161.54, 109,243.08 and 42,863.38

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Solution

The fourth proportional to 79,161.54, 109,243.08 and 42,863.38 is: 59,151.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,161.54 : 109,243.08 = 42,863.38 : x
  2. Step 2: Convert to fraction form
    79,161.54/109,243.08 = 42,863.38/x
  3. Step 3: Cross multiply
    79,161.54x = 109,243.08 × 42,863.38
  4. Step 4: Simplify right side
    79,161.54x = 4,682,527,650.41
  5. Step 5: Solve for x
    x = 4,682,527,650.41/79,161.54
  6. Step 6: Final answer
    x = 59,151.55

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1.5x scale

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.