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Finding the Fourth Proportional to 67,464.60, 101,196.90 and 20,711.40

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Solution

The fourth proportional to 67,464.60, 101,196.90 and 20,711.40 is: 31,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,464.60 : 101,196.90 = 20,711.40 : x
  2. Step 2: Convert to fraction form
    67,464.60/101,196.90 = 20,711.40/x
  3. Step 3: Cross multiply
    67,464.60x = 101,196.90 × 20,711.40
  4. Step 4: Simplify right side
    67,464.60x = 2,095,929,474.66
  5. Step 5: Solve for x
    x = 2,095,929,474.66/67,464.60
  6. Step 6: Final answer
    x = 31,067.10

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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.