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Finding the Fourth Proportional to 90,735.91, 125,214.90 and 50,449.36

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Solution

The fourth proportional to 90,735.91, 125,214.90 and 50,449.36 is: 69,619.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,735.91 : 125,214.90 = 50,449.36 : x
  2. Step 2: Convert to fraction form
    90,735.91/125,214.90 = 50,449.36/x
  3. Step 3: Cross multiply
    90,735.91x = 125,214.90 × 50,449.36
  4. Step 4: Simplify right side
    90,735.91x = 6,317,011,567.46
  5. Step 5: Solve for x
    x = 6,317,011,567.46/90,735.91
  6. Step 6: Final answer
    x = 69,619.75

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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.