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Finding the Fourth Proportional to 68,948.80, 103,420.32 and 22,200.64

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Solution

The fourth proportional to 68,948.80, 103,420.32 and 22,200.64 is: 33,300.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,948.80 : 103,420.32 = 22,200.64 : x
  2. Step 2: Convert to fraction form
    68,948.80/103,420.32 = 22,200.64/x
  3. Step 3: Cross multiply
    68,948.80x = 103,420.32 × 22,200.64
  4. Step 4: Simplify right side
    68,948.80x = 2,295,997,293.00
  5. Step 5: Solve for x
    x = 2,295,997,293.00/68,948.80
  6. Step 6: Final answer
    x = 33,300.03

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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.