Home / 74,010.72-102,135.60-40,476

Finding the Fourth Proportional to 74,010.72, 102,135.60 and 40,476

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Solution

The fourth proportional to 74,010.72, 102,135.60 and 40,476 is: 55,857.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,010.72 : 102,135.60 = 40,476 : x
  2. Step 2: Convert to fraction form
    74,010.72/102,135.60 = 40,476/x
  3. Step 3: Cross multiply
    74,010.72x = 102,135.60 × 40,476
  4. Step 4: Simplify right side
    74,010.72x = 4,134,040,545.60
  5. Step 5: Solve for x
    x = 4,134,040,545.60/74,010.72
  6. Step 6: Final answer
    x = 55,857.32

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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.