Home / 66,542,405.85-99,823,130.19-20,488,171.59

Finding the Fourth Proportional to 66,542,405.85, 99,823,130.19 and 20,488,171.59

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Solution

The fourth proportional to 66,542,405.85, 99,823,130.19 and 20,488,171.59 is: 30,735,189.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,542,405.85 : 99,823,130.19 = 20,488,171.59 : x
  2. Step 2: Convert to fraction form
    66,542,405.85/99,823,130.19 = 20,488,171.59/x
  3. Step 3: Cross multiply
    66,542,405.85x = 99,823,130.19 × 20,488,171.59
  4. Step 4: Simplify right side
    66,542,405.85x = 2,045,193,419,983,629.25
  5. Step 5: Solve for x
    x = 2,045,193,419,983,629.25/66,542,405.85
  6. Step 6: Final answer
    x = 30,735,189.00

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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.