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Finding the Fourth Proportional to 76,879.19, 115,278.87 and 29,480.27

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Solution

The fourth proportional to 76,879.19, 115,278.87 and 29,480.27 is: 44,205.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,879.19 : 115,278.87 = 29,480.27 : x
  2. Step 2: Convert to fraction form
    76,879.19/115,278.87 = 29,480.27/x
  3. Step 3: Cross multiply
    76,879.19x = 115,278.87 × 29,480.27
  4. Step 4: Simplify right side
    76,879.19x = 3,398,452,212.89
  5. Step 5: Solve for x
    x = 3,398,452,212.89/76,879.19
  6. Step 6: Final answer
    x = 44,205.10

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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.