Home / 84,178.23-126,230.39-31,550.81

Finding the Fourth Proportional to 84,178.23, 126,230.39 and 31,550.81

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Solution

The fourth proportional to 84,178.23, 126,230.39 and 31,550.81 is: 47,312.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,178.23 : 126,230.39 = 31,550.81 : x
  2. Step 2: Convert to fraction form
    84,178.23/126,230.39 = 31,550.81/x
  3. Step 3: Cross multiply
    84,178.23x = 126,230.39 × 31,550.81
  4. Step 4: Simplify right side
    84,178.23x = 3,982,670,380.53
  5. Step 5: Solve for x
    x = 3,982,670,380.53/84,178.23
  6. Step 6: Final answer
    x = 47,312.36

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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.