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Finding the Fourth Proportional to 74,304.64, 111,454.08 and 18,902.08

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Solution

The fourth proportional to 74,304.64, 111,454.08 and 18,902.08 is: 28,352.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,304.64 : 111,454.08 = 18,902.08 : x
  2. Step 2: Convert to fraction form
    74,304.64/111,454.08 = 18,902.08/x
  3. Step 3: Cross multiply
    74,304.64x = 111,454.08 × 18,902.08
  4. Step 4: Simplify right side
    74,304.64x = 2,106,713,936.49
  5. Step 5: Solve for x
    x = 2,106,713,936.49/74,304.64
  6. Step 6: Final answer
    x = 28,352.39

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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.