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Finding the Fourth Proportional to 66,811.53, 100,217.22 and 27,368.71

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Solution

The fourth proportional to 66,811.53, 100,217.22 and 27,368.71 is: 41,053.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,811.53 : 100,217.22 = 27,368.71 : x
  2. Step 2: Convert to fraction form
    66,811.53/100,217.22 = 27,368.71/x
  3. Step 3: Cross multiply
    66,811.53x = 100,217.22 × 27,368.71
  4. Step 4: Simplify right side
    66,811.53x = 2,742,816,031.19
  5. Step 5: Solve for x
    x = 2,742,816,031.19/66,811.53
  6. Step 6: Final answer
    x = 41,053.03

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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.