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Finding the Fourth Proportional to 73,885.10, 110,827.65 and 66,742.70

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Solution

The fourth proportional to 73,885.10, 110,827.65 and 66,742.70 is: 100,114.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,885.10 : 110,827.65 = 66,742.70 : x
  2. Step 2: Convert to fraction form
    73,885.10/110,827.65 = 66,742.70/x
  3. Step 3: Cross multiply
    73,885.10x = 110,827.65 × 66,742.70
  4. Step 4: Simplify right side
    73,885.10x = 7,396,936,595.66
  5. Step 5: Solve for x
    x = 7,396,936,595.66/73,885.10
  6. Step 6: Final answer
    x = 100,114.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.