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Finding the Fourth Proportional to 78,097.39, 117,145.04 and 18,933.59

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Solution

The fourth proportional to 78,097.39, 117,145.04 and 18,933.59 is: 28,400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,097.39 : 117,145.04 = 18,933.59 : x
  2. Step 2: Convert to fraction form
    78,097.39/117,145.04 = 18,933.59/x
  3. Step 3: Cross multiply
    78,097.39x = 117,145.04 × 18,933.59
  4. Step 4: Simplify right side
    78,097.39x = 2,217,976,205.23
  5. Step 5: Solve for x
    x = 2,217,976,205.23/78,097.39
  6. Step 6: Final answer
    x = 28,400.13

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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.