Home / 81,527.22-122,270.31-31,590.18

Finding the Fourth Proportional to 81,527.22, 122,270.31 and 31,590.18

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Solution

The fourth proportional to 81,527.22, 122,270.31 and 31,590.18 is: 47,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,527.22 : 122,270.31 = 31,590.18 : x
  2. Step 2: Convert to fraction form
    81,527.22/122,270.31 = 31,590.18/x
  3. Step 3: Cross multiply
    81,527.22x = 122,270.31 × 31,590.18
  4. Step 4: Simplify right side
    81,527.22x = 3,862,541,101.56
  5. Step 5: Solve for x
    x = 3,862,541,101.56/81,527.22
  6. Step 6: Final answer
    x = 47,377.32

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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.