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Finding the Fourth Proportional to 68,953.08, 103,468.50 and 68,426.04

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Solution

The fourth proportional to 68,953.08, 103,468.50 and 68,426.04 is: 102,677.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,953.08 : 103,468.50 = 68,426.04 : x
  2. Step 2: Convert to fraction form
    68,953.08/103,468.50 = 68,426.04/x
  3. Step 3: Cross multiply
    68,953.08x = 103,468.50 × 68,426.04
  4. Step 4: Simplify right side
    68,953.08x = 7,079,939,719.74
  5. Step 5: Solve for x
    x = 7,079,939,719.74/68,953.08
  6. Step 6: Final answer
    x = 102,677.64

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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.