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Finding the Fourth Proportional to 45,310.40, 67,965.60 and 34,251.20

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Solution

The fourth proportional to 45,310.40, 67,965.60 and 34,251.20 is: 51,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,310.40 : 67,965.60 = 34,251.20 : x
  2. Step 2: Convert to fraction form
    45,310.40/67,965.60 = 34,251.20/x
  3. Step 3: Cross multiply
    45,310.40x = 67,965.60 × 34,251.20
  4. Step 4: Simplify right side
    45,310.40x = 2,327,903,358.72
  5. Step 5: Solve for x
    x = 2,327,903,358.72/45,310.40
  6. Step 6: Final answer
    x = 51,376.80

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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.