Home / 66,420.45-91,657.56-36,205.14

Finding the Fourth Proportional to 66,420.45, 91,657.56 and 36,205.14

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Solution

The fourth proportional to 66,420.45, 91,657.56 and 36,205.14 is: 49,961.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.45 : 91,657.56 = 36,205.14 : x
  2. Step 2: Convert to fraction form
    66,420.45/91,657.56 = 36,205.14/x
  3. Step 3: Cross multiply
    66,420.45x = 91,657.56 × 36,205.14
  4. Step 4: Simplify right side
    66,420.45x = 3,318,474,791.86
  5. Step 5: Solve for x
    x = 3,318,474,791.86/66,420.45
  6. Step 6: Final answer
    x = 49,961.64

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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.