Home / 81,331,540.20-122,091,788.70-49,019,927.40

Finding the Fourth Proportional to 81,331,540.20, 122,091,788.70 and 49,019,927.40

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Solution

The fourth proportional to 81,331,540.20, 122,091,788.70 and 49,019,927.40 is: 73,586,834.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331,540.20 : 122,091,788.70 = 49,019,927.40 : x
  2. Step 2: Convert to fraction form
    81,331,540.20/122,091,788.70 = 49,019,927.40/x
  3. Step 3: Cross multiply
    81,331,540.20x = 122,091,788.70 × 49,019,927.40
  4. Step 4: Simplify right side
    81,331,540.20x = 5,984,930,618,210,140
  5. Step 5: Solve for x
    x = 5,984,930,618,210,140/81,331,540.20
  6. Step 6: Final answer
    x = 73,586,834.87

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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.