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Finding the Fourth Proportional to 66,060.98, 91,239.86 and 43,500.81

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Solution

The fourth proportional to 66,060.98, 91,239.86 and 43,500.81 is: 60,080.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,060.98 : 91,239.86 = 43,500.81 : x
  2. Step 2: Convert to fraction form
    66,060.98/91,239.86 = 43,500.81/x
  3. Step 3: Cross multiply
    66,060.98x = 91,239.86 × 43,500.81
  4. Step 4: Simplify right side
    66,060.98x = 3,969,007,596.78
  5. Step 5: Solve for x
    x = 3,969,007,596.78/66,060.98
  6. Step 6: Final answer
    x = 60,080.97

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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.