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Finding the Fourth Proportional to 90,880, 125,404.32 and 50,584.48

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Solution

The fourth proportional to 90,880, 125,404.32 and 50,584.48 is: 69,800.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,880 : 125,404.32 = 50,584.48 : x
  2. Step 2: Convert to fraction form
    90,880/125,404.32 = 50,584.48/x
  3. Step 3: Cross multiply
    90,880x = 125,404.32 × 50,584.48
  4. Step 4: Simplify right side
    90,880x = 6,343,512,316.95
  5. Step 5: Solve for x
    x = 6,343,512,316.95/90,880
  6. Step 6: Final answer
    x = 69,800.97

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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.