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Finding the Fourth Proportional to 99,694,958.70, 149,542,438.05 and 45,947,246.70

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Solution

The fourth proportional to 99,694,958.70, 149,542,438.05 and 45,947,246.70 is: 68,920,870.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,694,958.70 : 149,542,438.05 = 45,947,246.70 : x
  2. Step 2: Convert to fraction form
    99,694,958.70/149,542,438.05 = 45,947,246.70/x
  3. Step 3: Cross multiply
    99,694,958.70x = 149,542,438.05 × 45,947,246.70
  4. Step 4: Simplify right side
    99,694,958.70x = 6,871,063,293,202,818
  5. Step 5: Solve for x
    x = 6,871,063,293,202,818/99,694,958.70
  6. Step 6: Final answer
    x = 68,920,870.05

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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.