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Finding the Fourth Proportional to 74,288, 111,419.05 and 34,303.58

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Solution

The fourth proportional to 74,288, 111,419.05 and 34,303.58 is: 51,449.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,288 : 111,419.05 = 34,303.58 : x
  2. Step 2: Convert to fraction form
    74,288/111,419.05 = 34,303.58/x
  3. Step 3: Cross multiply
    74,288x = 111,419.05 × 34,303.58
  4. Step 4: Simplify right side
    74,288x = 3,822,072,295.20
  5. Step 5: Solve for x
    x = 3,822,072,295.20/74,288
  6. Step 6: Final answer
    x = 51,449.39

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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.