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Finding the Fourth Proportional to 68,807.20, 103,210.80 and 22,064.80

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Solution

The fourth proportional to 68,807.20, 103,210.80 and 22,064.80 is: 33,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,807.20 : 103,210.80 = 22,064.80 : x
  2. Step 2: Convert to fraction form
    68,807.20/103,210.80 = 22,064.80/x
  3. Step 3: Cross multiply
    68,807.20x = 103,210.80 × 22,064.80
  4. Step 4: Simplify right side
    68,807.20x = 2,277,325,659.84
  5. Step 5: Solve for x
    x = 2,277,325,659.84/68,807.20
  6. Step 6: Final answer
    x = 33,097.20

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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.