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Finding the Fourth Proportional to 68,894.40, 95,071.17 and 38,679.18

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Solution

The fourth proportional to 68,894.40, 95,071.17 and 38,679.18 is: 53,375.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,894.40 : 95,071.17 = 38,679.18 : x
  2. Step 2: Convert to fraction form
    68,894.40/95,071.17 = 38,679.18/x
  3. Step 3: Cross multiply
    68,894.40x = 95,071.17 × 38,679.18
  4. Step 4: Simplify right side
    68,894.40x = 3,677,274,897.24
  5. Step 5: Solve for x
    x = 3,677,274,897.24/68,894.40
  6. Step 6: Final answer
    x = 53,375.53

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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.