Home / 78,161.91-107,863.26-42,352.89

Finding the Fourth Proportional to 78,161.91, 107,863.26 and 42,352.89

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Solution

The fourth proportional to 78,161.91, 107,863.26 and 42,352.89 is: 58,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161.91 : 107,863.26 = 42,352.89 : x
  2. Step 2: Convert to fraction form
    78,161.91/107,863.26 = 42,352.89/x
  3. Step 3: Cross multiply
    78,161.91x = 107,863.26 × 42,352.89
  4. Step 4: Simplify right side
    78,161.91x = 4,568,320,785.82
  5. Step 5: Solve for x
    x = 4,568,320,785.82/78,161.91
  6. Step 6: Final answer
    x = 58,446.89

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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.