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Finding the Fourth Proportional to 68,533.70, 102,800.55 and 65,909.30

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Solution

The fourth proportional to 68,533.70, 102,800.55 and 65,909.30 is: 98,863.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,533.70 : 102,800.55 = 65,909.30 : x
  2. Step 2: Convert to fraction form
    68,533.70/102,800.55 = 65,909.30/x
  3. Step 3: Cross multiply
    68,533.70x = 102,800.55 × 65,909.30
  4. Step 4: Simplify right side
    68,533.70x = 6,775,512,290.12
  5. Step 5: Solve for x
    x = 6,775,512,290.12/68,533.70
  6. Step 6: Final answer
    x = 98,863.95

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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.