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Finding the Fourth Proportional to 74,423.44, 102,703.92 and 40,431.65

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Solution

The fourth proportional to 74,423.44, 102,703.92 and 40,431.65 is: 55,795.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,423.44 : 102,703.92 = 40,431.65 : x
  2. Step 2: Convert to fraction form
    74,423.44/102,703.92 = 40,431.65/x
  3. Step 3: Cross multiply
    74,423.44x = 102,703.92 × 40,431.65
  4. Step 4: Simplify right side
    74,423.44x = 4,152,488,947.07
  5. Step 5: Solve for x
    x = 4,152,488,947.07/74,423.44
  6. Step 6: Final answer
    x = 55,795.44

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