Home / 81,744.74-122,544.46-31,813.16

Finding the Fourth Proportional to 81,744.74, 122,544.46 and 31,813.16

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Solution

The fourth proportional to 81,744.74, 122,544.46 and 31,813.16 is: 47,691.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,744.74 : 122,544.46 = 31,813.16 : x
  2. Step 2: Convert to fraction form
    81,744.74/122,544.46 = 31,813.16/x
  3. Step 3: Cross multiply
    81,744.74x = 122,544.46 × 31,813.16
  4. Step 4: Simplify right side
    81,744.74x = 3,898,526,513.09
  5. Step 5: Solve for x
    x = 3,898,526,513.09/81,744.74
  6. Step 6: Final answer
    x = 47,691.47

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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.