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Finding the Fourth Proportional to 66,307.88, 91,505.04 and 36,093.20

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Solution

The fourth proportional to 66,307.88, 91,505.04 and 36,093.20 is: 49,808.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,307.88 : 91,505.04 = 36,093.20 : x
  2. Step 2: Convert to fraction form
    66,307.88/91,505.04 = 36,093.20/x
  3. Step 3: Cross multiply
    66,307.88x = 91,505.04 × 36,093.20
  4. Step 4: Simplify right side
    66,307.88x = 3,302,709,709.73
  5. Step 5: Solve for x
    x = 3,302,709,709.73/66,307.88
  6. Step 6: Final answer
    x = 49,808.71

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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.