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Finding the Fourth Proportional to 47,486.80, 71,203.87 and 19,426.57

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Solution

The fourth proportional to 47,486.80, 71,203.87 and 19,426.57 is: 29,129.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,486.80 : 71,203.87 = 19,426.57 : x
  2. Step 2: Convert to fraction form
    47,486.80/71,203.87 = 19,426.57/x
  3. Step 3: Cross multiply
    47,486.80x = 71,203.87 × 19,426.57
  4. Step 4: Simplify right side
    47,486.80x = 1,383,246,838.42
  5. Step 5: Solve for x
    x = 1,383,246,838.42/47,486.80
  6. Step 6: Final answer
    x = 29,129.08

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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.