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Finding the Fourth Proportional to 67,230.32, 100,710.25 and 31,156.25

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Solution

The fourth proportional to 67,230.32, 100,710.25 and 31,156.25 is: 46,671.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,230.32 : 100,710.25 = 31,156.25 : x
  2. Step 2: Convert to fraction form
    67,230.32/100,710.25 = 31,156.25/x
  3. Step 3: Cross multiply
    67,230.32x = 100,710.25 × 31,156.25
  4. Step 4: Simplify right side
    67,230.32x = 3,137,753,188.93
  5. Step 5: Solve for x
    x = 3,137,753,188.93/67,230.32
  6. Step 6: Final answer
    x = 46,671.70

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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.