Home / 90,709.06-125,181.21-54,905.62

Finding the Fourth Proportional to 90,709.06, 125,181.21 and 54,905.62

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Solution

The fourth proportional to 90,709.06, 125,181.21 and 54,905.62 is: 75,771.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,709.06 : 125,181.21 = 54,905.62 : x
  2. Step 2: Convert to fraction form
    90,709.06/125,181.21 = 54,905.62/x
  3. Step 3: Cross multiply
    90,709.06x = 125,181.21 × 54,905.62
  4. Step 4: Simplify right side
    90,709.06x = 6,873,151,947.40
  5. Step 5: Solve for x
    x = 6,873,151,947.40/90,709.06
  6. Step 6: Final answer
    x = 75,771.39

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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.