Home / 90,289.28-124,632.64-54,480.80

Finding the Fourth Proportional to 90,289.28, 124,632.64 and 54,480.80

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Solution

The fourth proportional to 90,289.28, 124,632.64 and 54,480.80 is: 75,203.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,289.28 : 124,632.64 = 54,480.80 : x
  2. Step 2: Convert to fraction form
    90,289.28/124,632.64 = 54,480.80/x
  3. Step 3: Cross multiply
    90,289.28x = 124,632.64 × 54,480.80
  4. Step 4: Simplify right side
    90,289.28x = 6,790,085,933.31
  5. Step 5: Solve for x
    x = 6,790,085,933.31/90,289.28
  6. Step 6: Final answer
    x = 75,203.68

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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.