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Finding the Fourth Proportional to 47,873.01, 71,809.52 and 12,811.75

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Solution

The fourth proportional to 47,873.01, 71,809.52 and 12,811.75 is: 19,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,873.01 : 71,809.52 = 12,811.75 : x
  2. Step 2: Convert to fraction form
    47,873.01/71,809.52 = 12,811.75/x
  3. Step 3: Cross multiply
    47,873.01x = 71,809.52 × 12,811.75
  4. Step 4: Simplify right side
    47,873.01x = 920,005,617.86
  5. Step 5: Solve for x
    x = 920,005,617.86/47,873.01
  6. Step 6: Final answer
    x = 19,217.63

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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.