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Finding the Fourth Proportional to 66,360.80, 91,596.72 and 43,716.32

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Solution

The fourth proportional to 66,360.80, 91,596.72 and 43,716.32 is: 60,340.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,360.80 : 91,596.72 = 43,716.32 : x
  2. Step 2: Convert to fraction form
    66,360.80/91,596.72 = 43,716.32/x
  3. Step 3: Cross multiply
    66,360.80x = 91,596.72 × 43,716.32
  4. Step 4: Simplify right side
    66,360.80x = 4,004,271,522.47
  5. Step 5: Solve for x
    x = 4,004,271,522.47/66,360.80
  6. Step 6: Final answer
    x = 60,340.92

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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.