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Finding the Fourth Proportional to 80,283.72, 120,402.90 and 50,657.16

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Solution

The fourth proportional to 80,283.72, 120,402.90 and 50,657.16 is: 75,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,283.72 : 120,402.90 = 50,657.16 : x
  2. Step 2: Convert to fraction form
    80,283.72/120,402.90 = 50,657.16/x
  3. Step 3: Cross multiply
    80,283.72x = 120,402.90 × 50,657.16
  4. Step 4: Simplify right side
    80,283.72x = 6,099,268,969.76
  5. Step 5: Solve for x
    x = 6,099,268,969.76/80,283.72
  6. Step 6: Final answer
    x = 75,971.43

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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.