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Finding the Fourth Proportional to 74,488.78, 102,783.82 and 43,843.66

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Solution

The fourth proportional to 74,488.78, 102,783.82 and 43,843.66 is: 60,497.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,488.78 : 102,783.82 = 43,843.66 : x
  2. Step 2: Convert to fraction form
    74,488.78/102,783.82 = 43,843.66/x
  3. Step 3: Cross multiply
    74,488.78x = 102,783.82 × 43,843.66
  4. Step 4: Simplify right side
    74,488.78x = 4,506,418,857.58
  5. Step 5: Solve for x
    x = 4,506,418,857.58/74,488.78
  6. Step 6: Final answer
    x = 60,497.95

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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.