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Finding the Fourth Proportional to 90,542.92, 124,946.89 and 50,255.50

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Solution

The fourth proportional to 90,542.92, 124,946.89 and 50,255.50 is: 69,351.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,542.92 : 124,946.89 = 50,255.50 : x
  2. Step 2: Convert to fraction form
    90,542.92/124,946.89 = 50,255.50/x
  3. Step 3: Cross multiply
    90,542.92x = 124,946.89 × 50,255.50
  4. Step 4: Simplify right side
    90,542.92x = 6,279,268,430.40
  5. Step 5: Solve for x
    x = 6,279,268,430.40/90,542.92
  6. Step 6: Final answer
    x = 69,351.29

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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.