Home / 81,060.96-121,634.24-57,520.62

Finding the Fourth Proportional to 81,060.96, 121,634.24 and 57,520.62

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Solution

The fourth proportional to 81,060.96, 121,634.24 and 57,520.62 is: 86,311.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,060.96 : 121,634.24 = 57,520.62 : x
  2. Step 2: Convert to fraction form
    81,060.96/121,634.24 = 57,520.62/x
  3. Step 3: Cross multiply
    81,060.96x = 121,634.24 × 57,520.62
  4. Step 4: Simplify right side
    81,060.96x = 6,996,476,898.03
  5. Step 5: Solve for x
    x = 6,996,476,898.03/81,060.96
  6. Step 6: Final answer
    x = 86,311.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.