Home / 90,732.09-125,217.29-54,434.90

Finding the Fourth Proportional to 90,732.09, 125,217.29 and 54,434.90

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Solution

The fourth proportional to 90,732.09, 125,217.29 and 54,434.90 is: 75,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,732.09 : 125,217.29 = 54,434.90 : x
  2. Step 2: Convert to fraction form
    90,732.09/125,217.29 = 54,434.90/x
  3. Step 3: Cross multiply
    90,732.09x = 125,217.29 × 54,434.90
  4. Step 4: Simplify right side
    90,732.09x = 6,816,190,741.05
  5. Step 5: Solve for x
    x = 6,816,190,741.05/90,732.09
  6. Step 6: Final answer
    x = 75,124.37

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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.