Home / 72,400,906.10-108,601,359.15-21,288,091.70

Finding the Fourth Proportional to 72,400,906.10, 108,601,359.15 and 21,288,091.70

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Solution

The fourth proportional to 72,400,906.10, 108,601,359.15 and 21,288,091.70 is: 31,932,137.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400,906.10 : 108,601,359.15 = 21,288,091.70 : x
  2. Step 2: Convert to fraction form
    72,400,906.10/108,601,359.15 = 21,288,091.70/x
  3. Step 3: Cross multiply
    72,400,906.10x = 108,601,359.15 × 21,288,091.70
  4. Step 4: Simplify right side
    72,400,906.10x = 2,311,915,692,329,834
  5. Step 5: Solve for x
    x = 2,311,915,692,329,834/72,400,906.10
  6. Step 6: Final answer
    x = 31,932,137.55

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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.