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Finding the Fourth Proportional to 74,304.70, 102,540.48 and 42,474.28

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Solution

The fourth proportional to 74,304.70, 102,540.48 and 42,474.28 is: 58,614.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,304.70 : 102,540.48 = 42,474.28 : x
  2. Step 2: Convert to fraction form
    74,304.70/102,540.48 = 42,474.28/x
  3. Step 3: Cross multiply
    74,304.70x = 102,540.48 × 42,474.28
  4. Step 4: Simplify right side
    74,304.70x = 4,355,333,058.85
  5. Step 5: Solve for x
    x = 4,355,333,058.85/74,304.70
  6. Step 6: Final answer
    x = 58,614.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.