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Finding the Fourth Proportional to 50,880.25, 70,211.25 and 28,217.12

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Solution

The fourth proportional to 50,880.25, 70,211.25 and 28,217.12 is: 38,937.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,880.25 : 70,211.25 = 28,217.12 : x
  2. Step 2: Convert to fraction form
    50,880.25/70,211.25 = 28,217.12/x
  3. Step 3: Cross multiply
    50,880.25x = 70,211.25 × 28,217.12
  4. Step 4: Simplify right side
    50,880.25x = 1,981,158,915.54
  5. Step 5: Solve for x
    x = 1,981,158,915.54/50,880.25
  6. Step 6: Final answer
    x = 38,937.68

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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.