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Finding the Fourth Proportional to 66,563.84, 91,857.44 and 39,723.52

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Solution

The fourth proportional to 66,563.84, 91,857.44 and 39,723.52 is: 54,818.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,563.84 : 91,857.44 = 39,723.52 : x
  2. Step 2: Convert to fraction form
    66,563.84/91,857.44 = 39,723.52/x
  3. Step 3: Cross multiply
    66,563.84x = 91,857.44 × 39,723.52
  4. Step 4: Simplify right side
    66,563.84x = 3,648,900,854.99
  5. Step 5: Solve for x
    x = 3,648,900,854.99/66,563.84
  6. Step 6: Final answer
    x = 54,818.06

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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.