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Finding the Fourth Proportional to 68,544.60, 102,827.70 and 21,802.20

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Solution

The fourth proportional to 68,544.60, 102,827.70 and 21,802.20 is: 32,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,544.60 : 102,827.70 = 21,802.20 : x
  2. Step 2: Convert to fraction form
    68,544.60/102,827.70 = 21,802.20/x
  3. Step 3: Cross multiply
    68,544.60x = 102,827.70 × 21,802.20
  4. Step 4: Simplify right side
    68,544.60x = 2,241,870,080.94
  5. Step 5: Solve for x
    x = 2,241,870,080.94/68,544.60
  6. Step 6: Final answer
    x = 32,706.74

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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.