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Finding the Fourth Proportional to 50,871.54, 70,203.56 and 28,211.48

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Solution

The fourth proportional to 50,871.54, 70,203.56 and 28,211.48 is: 38,932.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,871.54 : 70,203.56 = 28,211.48 : x
  2. Step 2: Convert to fraction form
    50,871.54/70,203.56 = 28,211.48/x
  3. Step 3: Cross multiply
    50,871.54x = 70,203.56 × 28,211.48
  4. Step 4: Simplify right side
    50,871.54x = 1,980,546,328.87
  5. Step 5: Solve for x
    x = 1,980,546,328.87/50,871.54
  6. Step 6: Final answer
    x = 38,932.31

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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.