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Finding the Fourth Proportional to 68,447.80, 102,671.70 and 31,025.80

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Solution

The fourth proportional to 68,447.80, 102,671.70 and 31,025.80 is: 46,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,447.80 : 102,671.70 = 31,025.80 : x
  2. Step 2: Convert to fraction form
    68,447.80/102,671.70 = 31,025.80/x
  3. Step 3: Cross multiply
    68,447.80x = 102,671.70 × 31,025.80
  4. Step 4: Simplify right side
    68,447.80x = 3,185,471,629.86
  5. Step 5: Solve for x
    x = 3,185,471,629.86/68,447.80
  6. Step 6: Final answer
    x = 46,538.70

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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.