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Finding the Fourth Proportional to 66,605.88, 91,826.04 and 52,281

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Solution

The fourth proportional to 66,605.88, 91,826.04 and 52,281 is: 72,077.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,605.88 : 91,826.04 = 52,281 : x
  2. Step 2: Convert to fraction form
    66,605.88/91,826.04 = 52,281/x
  3. Step 3: Cross multiply
    66,605.88x = 91,826.04 × 52,281
  4. Step 4: Simplify right side
    66,605.88x = 4,800,757,197.24
  5. Step 5: Solve for x
    x = 4,800,757,197.24/66,605.88
  6. Step 6: Final answer
    x = 72,077.08

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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.