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Finding the Fourth Proportional to 47,469.87, 71,212.71 and 19,404.99

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Solution

The fourth proportional to 47,469.87, 71,212.71 and 19,404.99 is: 29,110.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,469.87 : 71,212.71 = 19,404.99 : x
  2. Step 2: Convert to fraction form
    47,469.87/71,212.71 = 19,404.99/x
  3. Step 3: Cross multiply
    47,469.87x = 71,212.71 × 19,404.99
  4. Step 4: Simplify right side
    47,469.87x = 1,381,881,925.42
  5. Step 5: Solve for x
    x = 1,381,881,925.42/47,469.87
  6. Step 6: Final answer
    x = 29,110.72

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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.