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Finding the Fourth Proportional to 67,213.36, 92,755.70 and 38,935.40

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Solution

The fourth proportional to 67,213.36, 92,755.70 and 38,935.40 is: 53,731.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,213.36 : 92,755.70 = 38,935.40 : x
  2. Step 2: Convert to fraction form
    67,213.36/92,755.70 = 38,935.40/x
  3. Step 3: Cross multiply
    67,213.36x = 92,755.70 × 38,935.40
  4. Step 4: Simplify right side
    67,213.36x = 3,611,480,281.78
  5. Step 5: Solve for x
    x = 3,611,480,281.78/67,213.36
  6. Step 6: Final answer
    x = 53,731.58

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