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Finding the Fourth Proportional to 74,654, 111,983.18 and 19,250

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Solution

The fourth proportional to 74,654, 111,983.18 and 19,250 is: 28,875.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,654 : 111,983.18 = 19,250 : x
  2. Step 2: Convert to fraction form
    74,654/111,983.18 = 19,250/x
  3. Step 3: Cross multiply
    74,654x = 111,983.18 × 19,250
  4. Step 4: Simplify right side
    74,654x = 2,155,676,215
  5. Step 5: Solve for x
    x = 2,155,676,215/74,654
  6. Step 6: Final answer
    x = 28,875.56

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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.