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Finding the Fourth Proportional to 90,812.80, 125,319.12 and 50,524.48

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Solution

The fourth proportional to 90,812.80, 125,319.12 and 50,524.48 is: 69,722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,812.80 : 125,319.12 = 50,524.48 : x
  2. Step 2: Convert to fraction form
    90,812.80/125,319.12 = 50,524.48/x
  3. Step 3: Cross multiply
    90,812.80x = 125,319.12 × 50,524.48
  4. Step 4: Simplify right side
    90,812.80x = 6,331,683,372.06
  5. Step 5: Solve for x
    x = 6,331,683,372.06/90,812.80
  6. Step 6: Final answer
    x = 69,722.37

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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.