Home / 90,731.44-125,217.96-54,930.40

Finding the Fourth Proportional to 90,731.44, 125,217.96 and 54,930.40

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Solution

The fourth proportional to 90,731.44, 125,217.96 and 54,930.40 is: 75,809.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731.44 : 125,217.96 = 54,930.40 : x
  2. Step 2: Convert to fraction form
    90,731.44/125,217.96 = 54,930.40/x
  3. Step 3: Cross multiply
    90,731.44x = 125,217.96 × 54,930.40
  4. Step 4: Simplify right side
    90,731.44x = 6,878,272,629.98
  5. Step 5: Solve for x
    x = 6,878,272,629.98/90,731.44
  6. Step 6: Final answer
    x = 75,809.14

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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.