Home / 81,465,749.40-122,198,624.10-30,341,125.20

Finding the Fourth Proportional to 81,465,749.40, 122,198,624.10 and 30,341,125.20

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Solution

The fourth proportional to 81,465,749.40, 122,198,624.10 and 30,341,125.20 is: 45,511,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,749.40 : 122,198,624.10 = 30,341,125.20 : x
  2. Step 2: Convert to fraction form
    81,465,749.40/122,198,624.10 = 30,341,125.20/x
  3. Step 3: Cross multiply
    81,465,749.40x = 122,198,624.10 × 30,341,125.20
  4. Step 4: Simplify right side
    81,465,749.40x = 3,707,643,753,085,837
  5. Step 5: Solve for x
    x = 3,707,643,753,085,837/81,465,749.40
  6. Step 6: Final answer
    x = 45,511,687.80

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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.