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Finding the Fourth Proportional to 66,890.71, 100,351.52 and 22,516.33

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Solution

The fourth proportional to 66,890.71, 100,351.52 and 22,516.33 is: 33,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,890.71 : 100,351.52 = 22,516.33 : x
  2. Step 2: Convert to fraction form
    66,890.71/100,351.52 = 22,516.33/x
  3. Step 3: Cross multiply
    66,890.71x = 100,351.52 × 22,516.33
  4. Step 4: Simplify right side
    66,890.71x = 2,259,547,827.74
  5. Step 5: Solve for x
    x = 2,259,547,827.74/66,890.71
  6. Step 6: Final answer
    x = 33,779.70

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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.