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Finding the Fourth Proportional to 50,868.95, 70,198.80 and 28,207.95

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Solution

The fourth proportional to 50,868.95, 70,198.80 and 28,207.95 is: 38,926.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,868.95 : 70,198.80 = 28,207.95 : x
  2. Step 2: Convert to fraction form
    50,868.95/70,198.80 = 28,207.95/x
  3. Step 3: Cross multiply
    50,868.95x = 70,198.80 × 28,207.95
  4. Step 4: Simplify right side
    50,868.95x = 1,980,164,240.46
  5. Step 5: Solve for x
    x = 1,980,164,240.46/50,868.95
  6. Step 6: Final answer
    x = 38,926.78

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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.