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Finding the Fourth Proportional to 66,943.80, 100,345.64 and 22,555.22

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Solution

The fourth proportional to 66,943.80, 100,345.64 and 22,555.22 is: 33,809.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,943.80 : 100,345.64 = 22,555.22 : x
  2. Step 2: Convert to fraction form
    66,943.80/100,345.64 = 22,555.22/x
  3. Step 3: Cross multiply
    66,943.80x = 100,345.64 × 22,555.22
  4. Step 4: Simplify right side
    66,943.80x = 2,263,317,371.74
  5. Step 5: Solve for x
    x = 2,263,317,371.74/66,943.80
  6. Step 6: Final answer
    x = 33,809.22

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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.