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Finding the Fourth Proportional to 68,615.20, 102,897.20 and 27,053.60

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Solution

The fourth proportional to 68,615.20, 102,897.20 and 27,053.60 is: 40,570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,615.20 : 102,897.20 = 27,053.60 : x
  2. Step 2: Convert to fraction form
    68,615.20/102,897.20 = 27,053.60/x
  3. Step 3: Cross multiply
    68,615.20x = 102,897.20 × 27,053.60
  4. Step 4: Simplify right side
    68,615.20x = 2,783,739,689.92
  5. Step 5: Solve for x
    x = 2,783,739,689.92/68,615.20
  6. Step 6: Final answer
    x = 40,570.31

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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.