Home / 81,505.05-122,247.18-31,550.97

Finding the Fourth Proportional to 81,505.05, 122,247.18 and 31,550.97

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Solution

The fourth proportional to 81,505.05, 122,247.18 and 31,550.97 is: 47,322.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,505.05 : 122,247.18 = 31,550.97 : x
  2. Step 2: Convert to fraction form
    81,505.05/122,247.18 = 31,550.97/x
  3. Step 3: Cross multiply
    81,505.05x = 122,247.18 × 31,550.97
  4. Step 4: Simplify right side
    81,505.05x = 3,857,017,108.76
  5. Step 5: Solve for x
    x = 3,857,017,108.76/81,505.05
  6. Step 6: Final answer
    x = 47,322.43

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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.