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Finding the Fourth Proportional to 66,370.80, 91,610.52 and 43,726.32

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Solution

The fourth proportional to 66,370.80, 91,610.52 and 43,726.32 is: 60,354.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,370.80 : 91,610.52 = 43,726.32 : x
  2. Step 2: Convert to fraction form
    66,370.80/91,610.52 = 43,726.32/x
  3. Step 3: Cross multiply
    66,370.80x = 91,610.52 × 43,726.32
  4. Step 4: Simplify right side
    66,370.80x = 4,005,790,912.89
  5. Step 5: Solve for x
    x = 4,005,790,912.89/66,370.80
  6. Step 6: Final answer
    x = 60,354.72

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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.