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Finding the Fourth Proportional to 43,262.68, 64,894.02 and 16,979.80

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Solution

The fourth proportional to 43,262.68, 64,894.02 and 16,979.80 is: 25,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,262.68 : 64,894.02 = 16,979.80 : x
  2. Step 2: Convert to fraction form
    43,262.68/64,894.02 = 16,979.80/x
  3. Step 3: Cross multiply
    43,262.68x = 64,894.02 × 16,979.80
  4. Step 4: Simplify right side
    43,262.68x = 1,101,887,480.80
  5. Step 5: Solve for x
    x = 1,101,887,480.80/43,262.68
  6. Step 6: Final answer
    x = 25,469.70

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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.