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Finding the Fourth Proportional to 50,871.80, 70,203.92 and 28,211.74

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Solution

The fourth proportional to 50,871.80, 70,203.92 and 28,211.74 is: 38,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,871.80 : 70,203.92 = 28,211.74 : x
  2. Step 2: Convert to fraction form
    50,871.80/70,203.92 = 28,211.74/x
  3. Step 3: Cross multiply
    50,871.80x = 70,203.92 × 28,211.74
  4. Step 4: Simplify right side
    50,871.80x = 1,980,574,738.02
  5. Step 5: Solve for x
    x = 1,980,574,738.02/50,871.80
  6. Step 6: Final answer
    x = 38,932.66

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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.