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Finding the Fourth Proportional to 71,181.81, 98,228.21 and 39,351.24

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Solution

The fourth proportional to 71,181.81, 98,228.21 and 39,351.24 is: 54,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,181.81 : 98,228.21 = 39,351.24 : x
  2. Step 2: Convert to fraction form
    71,181.81/98,228.21 = 39,351.24/x
  3. Step 3: Cross multiply
    71,181.81x = 98,228.21 × 39,351.24
  4. Step 4: Simplify right side
    71,181.81x = 3,865,401,669.72
  5. Step 5: Solve for x
    x = 3,865,401,669.72/71,181.81
  6. Step 6: Final answer
    x = 54,303.22

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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.