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Finding the Fourth Proportional to 62,628, 86,472 and 40,310.88

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Solution

The fourth proportional to 62,628, 86,472 and 40,310.88 is: 55,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,628 : 86,472 = 40,310.88 : x
  2. Step 2: Convert to fraction form
    62,628/86,472 = 40,310.88/x
  3. Step 3: Cross multiply
    62,628x = 86,472 × 40,310.88
  4. Step 4: Simplify right side
    62,628x = 3,485,762,415.36
  5. Step 5: Solve for x
    x = 3,485,762,415.36/62,628
  6. Step 6: Final answer
    x = 55,658.21

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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.