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Finding the Fourth Proportional to 66,226.44, 91,392.15 and 39,018.36

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Solution

The fourth proportional to 66,226.44, 91,392.15 and 39,018.36 is: 53,845.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,226.44 : 91,392.15 = 39,018.36 : x
  2. Step 2: Convert to fraction form
    66,226.44/91,392.15 = 39,018.36/x
  3. Step 3: Cross multiply
    66,226.44x = 91,392.15 × 39,018.36
  4. Step 4: Simplify right side
    66,226.44x = 3,565,971,809.87
  5. Step 5: Solve for x
    x = 3,565,971,809.87/66,226.44
  6. Step 6: Final answer
    x = 53,845.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.