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Finding the Fourth Proportional to 68,130.50, 102,201.51 and 18,882.50

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Solution

The fourth proportional to 68,130.50, 102,201.51 and 18,882.50 is: 28,325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,130.50 : 102,201.51 = 18,882.50 : x
  2. Step 2: Convert to fraction form
    68,130.50/102,201.51 = 18,882.50/x
  3. Step 3: Cross multiply
    68,130.50x = 102,201.51 × 18,882.50
  4. Step 4: Simplify right side
    68,130.50x = 1,929,820,012.58
  5. Step 5: Solve for x
    x = 1,929,820,012.58/68,130.50
  6. Step 6: Final answer
    x = 28,325.35

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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.