Home / 81,465,862.10-122,198,793.15-47,028,485.30

Finding the Fourth Proportional to 81,465,862.10, 122,198,793.15 and 47,028,485.30

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Solution

The fourth proportional to 81,465,862.10, 122,198,793.15 and 47,028,485.30 is: 70,542,727.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,862.10 : 122,198,793.15 = 47,028,485.30 : x
  2. Step 2: Convert to fraction form
    81,465,862.10/122,198,793.15 = 47,028,485.30/x
  3. Step 3: Cross multiply
    81,465,862.10x = 122,198,793.15 × 47,028,485.30
  4. Step 4: Simplify right side
    81,465,862.10x = 5,746,824,147,332,516
  5. Step 5: Solve for x
    x = 5,746,824,147,332,516/81,465,862.10
  6. Step 6: Final answer
    x = 70,542,727.95

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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.