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Finding the Fourth Proportional to 55,068.68, 82,630.45 and 21,812.71

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Solution

The fourth proportional to 55,068.68, 82,630.45 and 21,812.71 is: 32,729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,068.68 : 82,630.45 = 21,812.71 : x
  2. Step 2: Convert to fraction form
    55,068.68/82,630.45 = 21,812.71/x
  3. Step 3: Cross multiply
    55,068.68x = 82,630.45 × 21,812.71
  4. Step 4: Simplify right side
    55,068.68x = 1,802,394,079.99
  5. Step 5: Solve for x
    x = 1,802,394,079.99/55,068.68
  6. Step 6: Final answer
    x = 32,729.93

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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.