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Finding the Fourth Proportional to 144,448.65, 216,630.67 and 54,426.42

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Solution

The fourth proportional to 144,448.65, 216,630.67 and 54,426.42 is: 81,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,448.65 : 216,630.67 = 54,426.42 : x
  2. Step 2: Convert to fraction form
    144,448.65/216,630.67 = 54,426.42/x
  3. Step 3: Cross multiply
    144,448.65x = 216,630.67 × 54,426.42
  4. Step 4: Simplify right side
    144,448.65x = 11,790,431,262.04
  5. Step 5: Solve for x
    x = 11,790,431,262.04/144,448.65
  6. Step 6: Final answer
    x = 81,623.68

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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.