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Finding the Fourth Proportional to 71,103.28, 98,114.12 and 39,270.28

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Solution

The fourth proportional to 71,103.28, 98,114.12 and 39,270.28 is: 54,188.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,103.28 : 98,114.12 = 39,270.28 : x
  2. Step 2: Convert to fraction form
    71,103.28/98,114.12 = 39,270.28/x
  3. Step 3: Cross multiply
    71,103.28x = 98,114.12 × 39,270.28
  4. Step 4: Simplify right side
    71,103.28x = 3,852,968,964.35
  5. Step 5: Solve for x
    x = 3,852,968,964.35/71,103.28
  6. Step 6: Final answer
    x = 54,188.34

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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.