Home / 72,068,458.14-108,121,121.57-20,950,476.95

Finding the Fourth Proportional to 72,068,458.14, 108,121,121.57 and 20,950,476.95

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Solution

The fourth proportional to 72,068,458.14, 108,121,121.57 and 20,950,476.95 is: 31,431,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,068,458.14 : 108,121,121.57 = 20,950,476.95 : x
  2. Step 2: Convert to fraction form
    72,068,458.14/108,121,121.57 = 20,950,476.95/x
  3. Step 3: Cross multiply
    72,068,458.14x = 108,121,121.57 × 20,950,476.95
  4. Step 4: Simplify right side
    72,068,458.14x = 2,265,189,065,583,112
  5. Step 5: Solve for x
    x = 2,265,189,065,583,112/72,068,458.14
  6. Step 6: Final answer
    x = 31,431,074.34

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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.