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Finding the Fourth Proportional to 74,394.80, 111,619.44 and 34,432.88

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Solution

The fourth proportional to 74,394.80, 111,619.44 and 34,432.88 is: 51,661.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,394.80 : 111,619.44 = 34,432.88 : x
  2. Step 2: Convert to fraction form
    74,394.80/111,619.44 = 34,432.88/x
  3. Step 3: Cross multiply
    74,394.80x = 111,619.44 × 34,432.88
  4. Step 4: Simplify right side
    74,394.80x = 3,843,378,783.19
  5. Step 5: Solve for x
    x = 3,843,378,783.19/74,394.80
  6. Step 6: Final answer
    x = 51,661.93

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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.