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Finding the Fourth Proportional to 71,188.22, 98,236.62 and 38,921.99

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Solution

The fourth proportional to 71,188.22, 98,236.62 and 38,921.99 is: 53,710.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.22 : 98,236.62 = 38,921.99 : x
  2. Step 2: Convert to fraction form
    71,188.22/98,236.62 = 38,921.99/x
  3. Step 3: Cross multiply
    71,188.22x = 98,236.62 × 38,921.99
  4. Step 4: Simplify right side
    71,188.22x = 3,823,565,188.43
  5. Step 5: Solve for x
    x = 3,823,565,188.43/71,188.22
  6. Step 6: Final answer
    x = 53,710.65

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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.