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Finding the Fourth Proportional to 144,624.69, 216,914.76 and 39,451.86

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Solution

The fourth proportional to 144,624.69, 216,914.76 and 39,451.86 is: 59,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,624.69 : 216,914.76 = 39,451.86 : x
  2. Step 2: Convert to fraction form
    144,624.69/216,914.76 = 39,451.86/x
  3. Step 3: Cross multiply
    144,624.69x = 216,914.76 × 39,451.86
  4. Step 4: Simplify right side
    144,624.69x = 8,557,690,743.45
  5. Step 5: Solve for x
    x = 8,557,690,743.45/144,624.69
  6. Step 6: Final answer
    x = 59,171.71

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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.