Home / 81,079,033.20-121,618,549.84-20,494,759.20

Finding the Fourth Proportional to 81,079,033.20, 121,618,549.84 and 20,494,759.20

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Solution

The fourth proportional to 81,079,033.20, 121,618,549.84 and 20,494,759.20 is: 30,742,138.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,079,033.20 : 121,618,549.84 = 20,494,759.20 : x
  2. Step 2: Convert to fraction form
    81,079,033.20/121,618,549.84 = 20,494,759.20/x
  3. Step 3: Cross multiply
    81,079,033.20x = 121,618,549.84 × 20,494,759.20
  4. Step 4: Simplify right side
    81,079,033.20x = 2,492,542,893,223,998.50
  5. Step 5: Solve for x
    x = 2,492,542,893,223,998.50/81,079,033.20
  6. Step 6: Final answer
    x = 30,742,138.81

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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.