Home / 72,807,694.20-109,211,541.30-20,992,196.70

Finding the Fourth Proportional to 72,807,694.20, 109,211,541.30 and 20,992,196.70

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Solution

The fourth proportional to 72,807,694.20, 109,211,541.30 and 20,992,196.70 is: 31,488,295.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,807,694.20 : 109,211,541.30 = 20,992,196.70 : x
  2. Step 2: Convert to fraction form
    72,807,694.20/109,211,541.30 = 20,992,196.70/x
  3. Step 3: Cross multiply
    72,807,694.20x = 109,211,541.30 × 20,992,196.70
  4. Step 4: Simplify right side
    72,807,694.20x = 2,292,590,156,879,773.50
  5. Step 5: Solve for x
    x = 2,292,590,156,879,773.50/72,807,694.20
  6. Step 6: Final answer
    x = 31,488,295.05

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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.