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Finding the Fourth Proportional to 74,097, 111,145.68 and 18,693

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Solution

The fourth proportional to 74,097, 111,145.68 and 18,693 is: 28,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,097 : 111,145.68 = 18,693 : x
  2. Step 2: Convert to fraction form
    74,097/111,145.68 = 18,693/x
  3. Step 3: Cross multiply
    74,097x = 111,145.68 × 18,693
  4. Step 4: Simplify right side
    74,097x = 2,077,646,196.24
  5. Step 5: Solve for x
    x = 2,077,646,196.24/74,097
  6. Step 6: Final answer
    x = 28,039.55

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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.