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Finding the Fourth Proportional to 66,367,811.20, 99,551,716.80 and 52,930,883.20

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Solution

The fourth proportional to 66,367,811.20, 99,551,716.80 and 52,930,883.20 is: 79,396,324.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,367,811.20 : 99,551,716.80 = 52,930,883.20 : x
  2. Step 2: Convert to fraction form
    66,367,811.20/99,551,716.80 = 52,930,883.20/x
  3. Step 3: Cross multiply
    66,367,811.20x = 99,551,716.80 × 52,930,883.20
  4. Step 4: Simplify right side
    66,367,811.20x = 5,269,360,294,300,278
  5. Step 5: Solve for x
    x = 5,269,360,294,300,278/66,367,811.20
  6. Step 6: Final answer
    x = 79,396,324.80

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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.