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Finding the Fourth Proportional to 68,954,612.70, 103,431,919.05 and 30,575,387.10

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Solution

The fourth proportional to 68,954,612.70, 103,431,919.05 and 30,575,387.10 is: 45,863,080.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,954,612.70 : 103,431,919.05 = 30,575,387.10 : x
  2. Step 2: Convert to fraction form
    68,954,612.70/103,431,919.05 = 30,575,387.10/x
  3. Step 3: Cross multiply
    68,954,612.70x = 103,431,919.05 × 30,575,387.10
  4. Step 4: Simplify right side
    68,954,612.70x = 3,162,470,963,449,614.50
  5. Step 5: Solve for x
    x = 3,162,470,963,449,614.50/68,954,612.70
  6. Step 6: Final answer
    x = 45,863,080.65

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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.