Home / 81,493.34-122,169.33-31,539.05

Finding the Fourth Proportional to 81,493.34, 122,169.33 and 31,539.05

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Solution

The fourth proportional to 81,493.34, 122,169.33 and 31,539.05 is: 47,281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,493.34 : 122,169.33 = 31,539.05 : x
  2. Step 2: Convert to fraction form
    81,493.34/122,169.33 = 31,539.05/x
  3. Step 3: Cross multiply
    81,493.34x = 122,169.33 × 31,539.05
  4. Step 4: Simplify right side
    81,493.34x = 3,853,103,996.49
  5. Step 5: Solve for x
    x = 3,853,103,996.49/81,493.34
  6. Step 6: Final answer
    x = 47,281.22

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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.