Home / 90,811.74-125,268.39-54,503.49

Finding the Fourth Proportional to 90,811.74, 125,268.39 and 54,503.49

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Solution

The fourth proportional to 90,811.74, 125,268.39 and 54,503.49 is: 75,183.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.74 : 125,268.39 = 54,503.49 : x
  2. Step 2: Convert to fraction form
    90,811.74/125,268.39 = 54,503.49/x
  3. Step 3: Cross multiply
    90,811.74x = 125,268.39 × 54,503.49
  4. Step 4: Simplify right side
    90,811.74x = 6,827,564,441.68
  5. Step 5: Solve for x
    x = 6,827,564,441.68/90,811.74
  6. Step 6: Final answer
    x = 75,183.72

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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.