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Finding the Fourth Proportional to 90,673.92, 125,130.69 and 50,391.45

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Solution

The fourth proportional to 90,673.92, 125,130.69 and 50,391.45 is: 69,540.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,673.92 : 125,130.69 = 50,391.45 : x
  2. Step 2: Convert to fraction form
    90,673.92/125,130.69 = 50,391.45/x
  3. Step 3: Cross multiply
    90,673.92x = 125,130.69 × 50,391.45
  4. Step 4: Simplify right side
    90,673.92x = 6,305,516,908.60
  5. Step 5: Solve for x
    x = 6,305,516,908.60/90,673.92
  6. Step 6: Final answer
    x = 69,540.58

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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.