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Finding the Fourth Proportional to 50,908.90, 70,254.12 and 28,251.31

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Solution

The fourth proportional to 50,908.90, 70,254.12 and 28,251.31 is: 38,986.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,908.90 : 70,254.12 = 28,251.31 : x
  2. Step 2: Convert to fraction form
    50,908.90/70,254.12 = 28,251.31/x
  3. Step 3: Cross multiply
    50,908.90x = 70,254.12 × 28,251.31
  4. Step 4: Simplify right side
    50,908.90x = 1,984,770,922.90
  5. Step 5: Solve for x
    x = 1,984,770,922.90/50,908.90
  6. Step 6: Final answer
    x = 38,986.72

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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.