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Finding the Fourth Proportional to 80,233.60, 120,350.40 and 56,905.60

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Solution

The fourth proportional to 80,233.60, 120,350.40 and 56,905.60 is: 85,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,233.60 : 120,350.40 = 56,905.60 : x
  2. Step 2: Convert to fraction form
    80,233.60/120,350.40 = 56,905.60/x
  3. Step 3: Cross multiply
    80,233.60x = 120,350.40 × 56,905.60
  4. Step 4: Simplify right side
    80,233.60x = 6,848,611,722.24
  5. Step 5: Solve for x
    x = 6,848,611,722.24/80,233.60
  6. Step 6: Final answer
    x = 85,358.40

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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.