Home / 81,232.80-121,747.72-39,105.05

Finding the Fourth Proportional to 81,232.80, 121,747.72 and 39,105.05

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Solution

The fourth proportional to 81,232.80, 121,747.72 and 39,105.05 is: 58,608.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232.80 : 121,747.72 = 39,105.05 : x
  2. Step 2: Convert to fraction form
    81,232.80/121,747.72 = 39,105.05/x
  3. Step 3: Cross multiply
    81,232.80x = 121,747.72 × 39,105.05
  4. Step 4: Simplify right side
    81,232.80x = 4,760,950,677.99
  5. Step 5: Solve for x
    x = 4,760,950,677.99/81,232.80
  6. Step 6: Final answer
    x = 58,608.72

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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.