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Finding the Fourth Proportional to 40,874,891.72, 61,324,172.02 and 12,121,719.30

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Solution

The fourth proportional to 40,874,891.72, 61,324,172.02 and 12,121,719.30 is: 18,186,088.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,874,891.72 : 61,324,172.02 = 12,121,719.30 : x
  2. Step 2: Convert to fraction form
    40,874,891.72/61,324,172.02 = 12,121,719.30/x
  3. Step 3: Cross multiply
    40,874,891.72x = 61,324,172.02 × 12,121,719.30
  4. Step 4: Simplify right side
    40,874,891.72x = 743,354,399,531,354.12
  5. Step 5: Solve for x
    x = 743,354,399,531,354.12/40,874,891.72
  6. Step 6: Final answer
    x = 18,186,088.53

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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.