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Finding the Fourth Proportional to 50,874.57, 70,206.90 and 28,518.57

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Solution

The fourth proportional to 50,874.57, 70,206.90 and 28,518.57 is: 39,355.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,874.57 : 70,206.90 = 28,518.57 : x
  2. Step 2: Convert to fraction form
    50,874.57/70,206.90 = 28,518.57/x
  3. Step 3: Cross multiply
    50,874.57x = 70,206.90 × 28,518.57
  4. Step 4: Simplify right side
    50,874.57x = 2,002,200,392.13
  5. Step 5: Solve for x
    x = 2,002,200,392.13/50,874.57
  6. Step 6: Final answer
    x = 39,355.62

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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.