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Finding the Fourth Proportional to 71,494.38, 98,662.32 and 39,663.54

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Solution

The fourth proportional to 71,494.38, 98,662.32 and 39,663.54 is: 54,735.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,494.38 : 98,662.32 = 39,663.54 : x
  2. Step 2: Convert to fraction form
    71,494.38/98,662.32 = 39,663.54/x
  3. Step 3: Cross multiply
    71,494.38x = 98,662.32 × 39,663.54
  4. Step 4: Simplify right side
    71,494.38x = 3,913,296,875.81
  5. Step 5: Solve for x
    x = 3,913,296,875.81/71,494.38
  6. Step 6: Final answer
    x = 54,735.73

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1.5x scale

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.