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Finding the Fourth Proportional to 50,873.31, 70,202.70 and 28,213.20

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Solution

The fourth proportional to 50,873.31, 70,202.70 and 28,213.20 is: 38,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,873.31 : 70,202.70 = 28,213.20 : x
  2. Step 2: Convert to fraction form
    50,873.31/70,202.70 = 28,213.20/x
  3. Step 3: Cross multiply
    50,873.31x = 70,202.70 × 28,213.20
  4. Step 4: Simplify right side
    50,873.31x = 1,980,642,815.64
  5. Step 5: Solve for x
    x = 1,980,642,815.64/50,873.31
  6. Step 6: Final answer
    x = 38,932.85

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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.