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Finding the Fourth Proportional to 68,896.80, 103,345.20 and 29,457.90

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Solution

The fourth proportional to 68,896.80, 103,345.20 and 29,457.90 is: 44,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,896.80 : 103,345.20 = 29,457.90 : x
  2. Step 2: Convert to fraction form
    68,896.80/103,345.20 = 29,457.90/x
  3. Step 3: Cross multiply
    68,896.80x = 103,345.20 × 29,457.90
  4. Step 4: Simplify right side
    68,896.80x = 3,044,332,567.08
  5. Step 5: Solve for x
    x = 3,044,332,567.08/68,896.80
  6. Step 6: Final answer
    x = 44,186.85

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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.