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Finding the Fourth Proportional to 68,226.40, 102,493.20 and 65,615.20

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Solution

The fourth proportional to 68,226.40, 102,493.20 and 65,615.20 is: 98,570.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,226.40 : 102,493.20 = 65,615.20 : x
  2. Step 2: Convert to fraction form
    68,226.40/102,493.20 = 65,615.20/x
  3. Step 3: Cross multiply
    68,226.40x = 102,493.20 × 65,615.20
  4. Step 4: Simplify right side
    68,226.40x = 6,725,111,816.64
  5. Step 5: Solve for x
    x = 6,725,111,816.64/68,226.40
  6. Step 6: Final answer
    x = 98,570.52

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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.