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Finding the Fourth Proportional to 90,775, 125,270.58 and 50,491.72

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Solution

The fourth proportional to 90,775, 125,270.58 and 50,491.72 is: 69,679.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,775 : 125,270.58 = 50,491.72 : x
  2. Step 2: Convert to fraction form
    90,775/125,270.58 = 50,491.72/x
  3. Step 3: Cross multiply
    90,775x = 125,270.58 × 50,491.72
  4. Step 4: Simplify right side
    90,775x = 6,325,127,049.60
  5. Step 5: Solve for x
    x = 6,325,127,049.60/90,775
  6. Step 6: Final answer
    x = 69,679.17

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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.