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Finding the Fourth Proportional to 74,801.54, 103,230.08 and 42,972.49

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Solution

The fourth proportional to 74,801.54, 103,230.08 and 42,972.49 is: 59,304.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,801.54 : 103,230.08 = 42,972.49 : x
  2. Step 2: Convert to fraction form
    74,801.54/103,230.08 = 42,972.49/x
  3. Step 3: Cross multiply
    74,801.54x = 103,230.08 × 42,972.49
  4. Step 4: Simplify right side
    74,801.54x = 4,436,053,655.82
  5. Step 5: Solve for x
    x = 4,436,053,655.82/74,801.54
  6. Step 6: Final answer
    x = 59,304.31

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1.5x scale

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.