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Finding the Fourth Proportional to 74,408.66, 102,654.86 and 42,560.54

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Solution

The fourth proportional to 74,408.66, 102,654.86 and 42,560.54 is: 58,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,408.66 : 102,654.86 = 42,560.54 : x
  2. Step 2: Convert to fraction form
    74,408.66/102,654.86 = 42,560.54/x
  3. Step 3: Cross multiply
    74,408.66x = 102,654.86 × 42,560.54
  4. Step 4: Simplify right side
    74,408.66x = 4,369,046,275.22
  5. Step 5: Solve for x
    x = 4,369,046,275.22/74,408.66
  6. Step 6: Final answer
    x = 58,716.91

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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.