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Finding the Fourth Proportional to 68,405.80, 102,671.78 and 34,695.48

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Solution

The fourth proportional to 68,405.80, 102,671.78 and 34,695.48 is: 52,075.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,405.80 : 102,671.78 = 34,695.48 : x
  2. Step 2: Convert to fraction form
    68,405.80/102,671.78 = 34,695.48/x
  3. Step 3: Cross multiply
    68,405.80x = 102,671.78 × 34,695.48
  4. Step 4: Simplify right side
    68,405.80x = 3,562,246,689.55
  5. Step 5: Solve for x
    x = 3,562,246,689.55/68,405.80
  6. Step 6: Final answer
    x = 52,075.21

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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.