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Finding the Fourth Proportional to 70,067.52, 105,081.80 and 19,454.90

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Solution

The fourth proportional to 70,067.52, 105,081.80 and 19,454.90 is: 29,176.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,067.52 : 105,081.80 = 19,454.90 : x
  2. Step 2: Convert to fraction form
    70,067.52/105,081.80 = 19,454.90/x
  3. Step 3: Cross multiply
    70,067.52x = 105,081.80 × 19,454.90
  4. Step 4: Simplify right side
    70,067.52x = 2,044,355,288.14
  5. Step 5: Solve for x
    x = 2,044,355,288.14/70,067.52
  6. Step 6: Final answer
    x = 29,176.93

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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.