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Finding the Fourth Proportional to 95,642.21, 143,401.78 and 45,721.19

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Solution

The fourth proportional to 95,642.21, 143,401.78 and 45,721.19 is: 68,552.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,642.21 : 143,401.78 = 45,721.19 : x
  2. Step 2: Convert to fraction form
    95,642.21/143,401.78 = 45,721.19/x
  3. Step 3: Cross multiply
    95,642.21x = 143,401.78 × 45,721.19
  4. Step 4: Simplify right side
    95,642.21x = 6,556,500,029.72
  5. Step 5: Solve for x
    x = 6,556,500,029.72/95,642.21
  6. Step 6: Final answer
    x = 68,552.37

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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.