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Finding the Fourth Proportional to 50,872.65, 70,202.95 and 28,211.28

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Solution

The fourth proportional to 50,872.65, 70,202.95 and 28,211.28 is: 38,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,872.65 : 70,202.95 = 28,211.28 : x
  2. Step 2: Convert to fraction form
    50,872.65/70,202.95 = 28,211.28/x
  3. Step 3: Cross multiply
    50,872.65x = 70,202.95 × 28,211.28
  4. Step 4: Simplify right side
    50,872.65x = 1,980,515,079.28
  5. Step 5: Solve for x
    x = 1,980,515,079.28/50,872.65
  6. Step 6: Final answer
    x = 38,930.84

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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.