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Finding the Fourth Proportional to 66,202, 91,436.76 and 43,807.12

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Solution

The fourth proportional to 66,202, 91,436.76 and 43,807.12 is: 60,505.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,202 : 91,436.76 = 43,807.12 : x
  2. Step 2: Convert to fraction form
    66,202/91,436.76 = 43,807.12/x
  3. Step 3: Cross multiply
    66,202x = 91,436.76 × 43,807.12
  4. Step 4: Simplify right side
    66,202x = 4,005,581,117.73
  5. Step 5: Solve for x
    x = 4,005,581,117.73/66,202
  6. Step 6: Final answer
    x = 60,505.44

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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.