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Finding the Fourth Proportional to 68,127.78, 102,033.12 and 65,763.09

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Solution

The fourth proportional to 68,127.78, 102,033.12 and 65,763.09 is: 98,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,127.78 : 102,033.12 = 65,763.09 : x
  2. Step 2: Convert to fraction form
    68,127.78/102,033.12 = 65,763.09/x
  3. Step 3: Cross multiply
    68,127.78x = 102,033.12 × 65,763.09
  4. Step 4: Simplify right side
    68,127.78x = 6,710,013,130.24
  5. Step 5: Solve for x
    x = 6,710,013,130.24/68,127.78
  6. Step 6: Final answer
    x = 98,491.58

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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.