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Finding the Fourth Proportional to 74,038, 102,173.92 and 40,504.72

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Solution

The fourth proportional to 74,038, 102,173.92 and 40,504.72 is: 55,897.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,038 : 102,173.92 = 40,504.72 : x
  2. Step 2: Convert to fraction form
    74,038/102,173.92 = 40,504.72/x
  3. Step 3: Cross multiply
    74,038x = 102,173.92 × 40,504.72
  4. Step 4: Simplify right side
    74,038x = 4,138,526,020.90
  5. Step 5: Solve for x
    x = 4,138,526,020.90/74,038
  6. Step 6: Final answer
    x = 55,897.32

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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.