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Finding the Fourth Proportional to 68,609.34, 102,858.53 and 28,658.92

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Solution

The fourth proportional to 68,609.34, 102,858.53 and 28,658.92 is: 42,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,609.34 : 102,858.53 = 28,658.92 : x
  2. Step 2: Convert to fraction form
    68,609.34/102,858.53 = 28,658.92/x
  3. Step 3: Cross multiply
    68,609.34x = 102,858.53 × 28,658.92
  4. Step 4: Simplify right side
    68,609.34x = 2,947,814,382.59
  5. Step 5: Solve for x
    x = 2,947,814,382.59/68,609.34
  6. Step 6: Final answer
    x = 42,965.21

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1.5x scale

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.