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Finding the Fourth Proportional to 66,894.40, 100,348.80 and 22,519.36

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Solution

The fourth proportional to 66,894.40, 100,348.80 and 22,519.36 is: 33,781.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,894.40 : 100,348.80 = 22,519.36 : x
  2. Step 2: Convert to fraction form
    66,894.40/100,348.80 = 22,519.36/x
  3. Step 3: Cross multiply
    66,894.40x = 100,348.80 × 22,519.36
  4. Step 4: Simplify right side
    66,894.40x = 2,259,790,752.77
  5. Step 5: Solve for x
    x = 2,259,790,752.77/66,894.40
  6. Step 6: Final answer
    x = 33,781.46

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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.