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Finding the Fourth Proportional to 68,343.80, 102,515.70 and 62,814.20

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Solution

The fourth proportional to 68,343.80, 102,515.70 and 62,814.20 is: 94,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,343.80 : 102,515.70 = 62,814.20 : x
  2. Step 2: Convert to fraction form
    68,343.80/102,515.70 = 62,814.20/x
  3. Step 3: Cross multiply
    68,343.80x = 102,515.70 × 62,814.20
  4. Step 4: Simplify right side
    68,343.80x = 6,439,441,682.94
  5. Step 5: Solve for x
    x = 6,439,441,682.94/68,343.80
  6. Step 6: Final answer
    x = 94,221.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.