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Finding the Fourth Proportional to 66,138.86, 91,277.27 and 37,463.64

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Solution

The fourth proportional to 66,138.86, 91,277.27 and 37,463.64 is: 51,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,138.86 : 91,277.27 = 37,463.64 : x
  2. Step 2: Convert to fraction form
    66,138.86/91,277.27 = 37,463.64/x
  3. Step 3: Cross multiply
    66,138.86x = 91,277.27 × 37,463.64
  4. Step 4: Simplify right side
    66,138.86x = 3,419,578,877.12
  5. Step 5: Solve for x
    x = 3,419,578,877.12/66,138.86
  6. Step 6: Final answer
    x = 51,703.02

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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.