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Finding the Fourth Proportional to 67,801.10, 101,701.65 and 42,917.90

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Solution

The fourth proportional to 67,801.10, 101,701.65 and 42,917.90 is: 64,376.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,801.10 : 101,701.65 = 42,917.90 : x
  2. Step 2: Convert to fraction form
    67,801.10/101,701.65 = 42,917.90/x
  3. Step 3: Cross multiply
    67,801.10x = 101,701.65 × 42,917.90
  4. Step 4: Simplify right side
    67,801.10x = 4,364,821,244.54
  5. Step 5: Solve for x
    x = 4,364,821,244.54/67,801.10
  6. Step 6: Final answer
    x = 64,376.85

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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.