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Finding the Fourth Proportional to 18,040,665.32, 27,064,978.32 and 5,262,170.12

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Solution

The fourth proportional to 18,040,665.32, 27,064,978.32 and 5,262,170.12 is: 7,894,416.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,040,665.32 : 27,064,978.32 = 5,262,170.12 : x
  2. Step 2: Convert to fraction form
    18,040,665.32/27,064,978.32 = 5,262,170.12/x
  3. Step 3: Cross multiply
    18,040,665.32x = 27,064,978.32 × 5,262,170.12
  4. Step 4: Simplify right side
    18,040,665.32x = 142,420,520,213,951.81
  5. Step 5: Solve for x
    x = 142,420,520,213,951.81/18,040,665.32
  6. Step 6: Final answer
    x = 7,894,416.18

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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.