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Finding the Fourth Proportional to 50,761.60, 70,039.20 and 29,528.80

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Solution

The fourth proportional to 50,761.60, 70,039.20 and 29,528.80 is: 40,742.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,761.60 : 70,039.20 = 29,528.80 : x
  2. Step 2: Convert to fraction form
    50,761.60/70,039.20 = 29,528.80/x
  3. Step 3: Cross multiply
    50,761.60x = 70,039.20 × 29,528.80
  4. Step 4: Simplify right side
    50,761.60x = 2,068,173,528.96
  5. Step 5: Solve for x
    x = 2,068,173,528.96/50,761.60
  6. Step 6: Final answer
    x = 40,742.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.