Home / 90,785.70-125,287.83-54,955.44

Finding the Fourth Proportional to 90,785.70, 125,287.83 and 54,955.44

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Solution

The fourth proportional to 90,785.70, 125,287.83 and 54,955.44 is: 75,840.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,785.70 : 125,287.83 = 54,955.44 : x
  2. Step 2: Convert to fraction form
    90,785.70/125,287.83 = 54,955.44/x
  3. Step 3: Cross multiply
    90,785.70x = 125,287.83 × 54,955.44
  4. Step 4: Simplify right side
    90,785.70x = 6,885,247,824.30
  5. Step 5: Solve for x
    x = 6,885,247,824.30/90,785.70
  6. Step 6: Final answer
    x = 75,840.66

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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.