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Finding the Fourth Proportional to 66,956.60, 92,402.84 and 40,093.76

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Solution

The fourth proportional to 66,956.60, 92,402.84 and 40,093.76 is: 55,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,956.60 : 92,402.84 = 40,093.76 : x
  2. Step 2: Convert to fraction form
    66,956.60/92,402.84 = 40,093.76/x
  3. Step 3: Cross multiply
    66,956.60x = 92,402.84 × 40,093.76
  4. Step 4: Simplify right side
    66,956.60x = 3,704,777,290.28
  5. Step 5: Solve for x
    x = 3,704,777,290.28/66,956.60
  6. Step 6: Final answer
    x = 55,331.02

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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.