Home / 81,193,749.40-121,790,624.10-55,365,716.80

Finding the Fourth Proportional to 81,193,749.40, 121,790,624.10 and 55,365,716.80

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Solution

The fourth proportional to 81,193,749.40, 121,790,624.10 and 55,365,716.80 is: 83,048,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,193,749.40 : 121,790,624.10 = 55,365,716.80 : x
  2. Step 2: Convert to fraction form
    81,193,749.40/121,790,624.10 = 55,365,716.80/x
  3. Step 3: Cross multiply
    81,193,749.40x = 121,790,624.10 × 55,365,716.80
  4. Step 4: Simplify right side
    81,193,749.40x = 6,743,025,202,815,854
  5. Step 5: Solve for x
    x = 6,743,025,202,815,854/81,193,749.40
  6. Step 6: Final answer
    x = 83,048,575.20

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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.