Home / 80,539.52-120,742.75-35,528.78

Finding the Fourth Proportional to 80,539.52, 120,742.75 and 35,528.78

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Solution

The fourth proportional to 80,539.52, 120,742.75 and 35,528.78 is: 53,263.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,539.52 : 120,742.75 = 35,528.78 : x
  2. Step 2: Convert to fraction form
    80,539.52/120,742.75 = 35,528.78/x
  3. Step 3: Cross multiply
    80,539.52x = 120,742.75 × 35,528.78
  4. Step 4: Simplify right side
    80,539.52x = 4,289,842,268.43
  5. Step 5: Solve for x
    x = 4,289,842,268.43/80,539.52
  6. Step 6: Final answer
    x = 53,263.82

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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.