Home / 81,746.34-122,624.97-31,823.20

Finding the Fourth Proportional to 81,746.34, 122,624.97 and 31,823.20

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Solution

The fourth proportional to 81,746.34, 122,624.97 and 31,823.20 is: 47,736.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,746.34 : 122,624.97 = 31,823.20 : x
  2. Step 2: Convert to fraction form
    81,746.34/122,624.97 = 31,823.20/x
  3. Step 3: Cross multiply
    81,746.34x = 122,624.97 × 31,823.20
  4. Step 4: Simplify right side
    81,746.34x = 3,902,318,945.30
  5. Step 5: Solve for x
    x = 3,902,318,945.30/81,746.34
  6. Step 6: Final answer
    x = 47,736.93

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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.