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Finding the Fourth Proportional to 81,353.85, 112,265.03 and 47,363.31

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Solution

The fourth proportional to 81,353.85, 112,265.03 and 47,363.31 is: 65,359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,353.85 : 112,265.03 = 47,363.31 : x
  2. Step 2: Convert to fraction form
    81,353.85/112,265.03 = 47,363.31/x
  3. Step 3: Cross multiply
    81,353.85x = 112,265.03 × 47,363.31
  4. Step 4: Simplify right side
    81,353.85x = 5,317,243,181.23
  5. Step 5: Solve for x
    x = 5,317,243,181.23/81,353.85
  6. Step 6: Final answer
    x = 65,359.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.