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Finding the Fourth Proportional to 68,762.20, 103,175.70 and 51,266.20

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Solution

The fourth proportional to 68,762.20, 103,175.70 and 51,266.20 is: 76,923.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,762.20 : 103,175.70 = 51,266.20 : x
  2. Step 2: Convert to fraction form
    68,762.20/103,175.70 = 51,266.20/x
  3. Step 3: Cross multiply
    68,762.20x = 103,175.70 × 51,266.20
  4. Step 4: Simplify right side
    68,762.20x = 5,289,426,071.34
  5. Step 5: Solve for x
    x = 5,289,426,071.34/68,762.20
  6. Step 6: Final answer
    x = 76,923.46

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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.