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Finding the Fourth Proportional to 74,494.61, 102,804.57 and 40,505.39

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Solution

The fourth proportional to 74,494.61, 102,804.57 and 40,505.39 is: 55,898.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,494.61 : 102,804.57 = 40,505.39 : x
  2. Step 2: Convert to fraction form
    74,494.61/102,804.57 = 40,505.39/x
  3. Step 3: Cross multiply
    74,494.61x = 102,804.57 × 40,505.39
  4. Step 4: Simplify right side
    74,494.61x = 4,164,138,687.61
  5. Step 5: Solve for x
    x = 4,164,138,687.61/74,494.61
  6. Step 6: Final answer
    x = 55,898.53

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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.