Home / 90,286.28-124,628.50-54,477.80

Finding the Fourth Proportional to 90,286.28, 124,628.50 and 54,477.80

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Solution

The fourth proportional to 90,286.28, 124,628.50 and 54,477.80 is: 75,199.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,286.28 : 124,628.50 = 54,477.80 : x
  2. Step 2: Convert to fraction form
    90,286.28/124,628.50 = 54,477.80/x
  3. Step 3: Cross multiply
    90,286.28x = 124,628.50 × 54,477.80
  4. Step 4: Simplify right side
    90,286.28x = 6,789,486,497.30
  5. Step 5: Solve for x
    x = 6,789,486,497.30/90,286.28
  6. Step 6: Final answer
    x = 75,199.54

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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.