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Finding the Fourth Proportional to 105,392.91, 158,151.74 and 38,879.79

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Solution

The fourth proportional to 105,392.91, 158,151.74 and 38,879.79 is: 58,342.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,392.91 : 158,151.74 = 38,879.79 : x
  2. Step 2: Convert to fraction form
    105,392.91/158,151.74 = 38,879.79/x
  3. Step 3: Cross multiply
    105,392.91x = 158,151.74 × 38,879.79
  4. Step 4: Simplify right side
    105,392.91x = 6,148,906,244.94
  5. Step 5: Solve for x
    x = 6,148,906,244.94/105,392.91
  6. Step 6: Final answer
    x = 58,342.69

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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.