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Finding the Fourth Proportional to 66,468.50, 91,733.01 and 36,660.50

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Solution

The fourth proportional to 66,468.50, 91,733.01 and 36,660.50 is: 50,595.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,468.50 : 91,733.01 = 36,660.50 : x
  2. Step 2: Convert to fraction form
    66,468.50/91,733.01 = 36,660.50/x
  3. Step 3: Cross multiply
    66,468.50x = 91,733.01 × 36,660.50
  4. Step 4: Simplify right side
    66,468.50x = 3,362,978,013.11
  5. Step 5: Solve for x
    x = 3,362,978,013.11/66,468.50
  6. Step 6: Final answer
    x = 50,595.06

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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.