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Finding the Fourth Proportional to 139,882.05, 209,825.10 and 40,042.32

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Solution

The fourth proportional to 139,882.05, 209,825.10 and 40,042.32 is: 60,064.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,882.05 : 209,825.10 = 40,042.32 : x
  2. Step 2: Convert to fraction form
    139,882.05/209,825.10 = 40,042.32/x
  3. Step 3: Cross multiply
    139,882.05x = 209,825.10 × 40,042.32
  4. Step 4: Simplify right side
    139,882.05x = 8,401,883,798.23
  5. Step 5: Solve for x
    x = 8,401,883,798.23/139,882.05
  6. Step 6: Final answer
    x = 60,064.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.