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Finding the Fourth Proportional to 140,873.88, 211,310.82 and 47,379.72

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Solution

The fourth proportional to 140,873.88, 211,310.82 and 47,379.72 is: 71,069.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,873.88 : 211,310.82 = 47,379.72 : x
  2. Step 2: Convert to fraction form
    140,873.88/211,310.82 = 47,379.72/x
  3. Step 3: Cross multiply
    140,873.88x = 211,310.82 × 47,379.72
  4. Step 4: Simplify right side
    140,873.88x = 10,011,847,484.57
  5. Step 5: Solve for x
    x = 10,011,847,484.57/140,873.88
  6. Step 6: Final answer
    x = 71,069.58

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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.