Home / 90,731.98-125,214.30-50,449.88

Finding the Fourth Proportional to 90,731.98, 125,214.30 and 50,449.88

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Solution

The fourth proportional to 90,731.98, 125,214.30 and 50,449.88 is: 69,623.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731.98 : 125,214.30 = 50,449.88 : x
  2. Step 2: Convert to fraction form
    90,731.98/125,214.30 = 50,449.88/x
  3. Step 3: Cross multiply
    90,731.98x = 125,214.30 × 50,449.88
  4. Step 4: Simplify right side
    90,731.98x = 6,317,046,409.28
  5. Step 5: Solve for x
    x = 6,317,046,409.28/90,731.98
  6. Step 6: Final answer
    x = 69,623.15

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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.