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Finding the Fourth Proportional to 70,959.34, 106,226.48 and 68,435.88

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Solution

The fourth proportional to 70,959.34, 106,226.48 and 68,435.88 is: 102,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,959.34 : 106,226.48 = 68,435.88 : x
  2. Step 2: Convert to fraction form
    70,959.34/106,226.48 = 68,435.88/x
  3. Step 3: Cross multiply
    70,959.34x = 106,226.48 × 68,435.88
  4. Step 4: Simplify right side
    70,959.34x = 7,269,702,638.10
  5. Step 5: Solve for x
    x = 7,269,702,638.10/70,959.34
  6. Step 6: Final answer
    x = 102,448.85

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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.