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Finding the Fourth Proportional to 76,310.85, 105,287.52 and 60,127.98

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Solution

The fourth proportional to 76,310.85, 105,287.52 and 60,127.98 is: 82,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,310.85 : 105,287.52 = 60,127.98 : x
  2. Step 2: Convert to fraction form
    76,310.85/105,287.52 = 60,127.98/x
  3. Step 3: Cross multiply
    76,310.85x = 105,287.52 × 60,127.98
  4. Step 4: Simplify right side
    76,310.85x = 6,330,725,896.81
  5. Step 5: Solve for x
    x = 6,330,725,896.81/76,310.85
  6. Step 6: Final answer
    x = 82,959.71

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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.