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Finding the Fourth Proportional to 68,539.80, 102,906.90 and 42,295.80

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Solution

The fourth proportional to 68,539.80, 102,906.90 and 42,295.80 is: 63,503.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,539.80 : 102,906.90 = 42,295.80 : x
  2. Step 2: Convert to fraction form
    68,539.80/102,906.90 = 42,295.80/x
  3. Step 3: Cross multiply
    68,539.80x = 102,906.90 × 42,295.80
  4. Step 4: Simplify right side
    68,539.80x = 4,352,529,661.02
  5. Step 5: Solve for x
    x = 4,352,529,661.02/68,539.80
  6. Step 6: Final answer
    x = 63,503.68

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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.