Home / 66,335.20-91,539.60-36,119.76

Finding the Fourth Proportional to 66,335.20, 91,539.60 and 36,119.76

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Solution

The fourth proportional to 66,335.20, 91,539.60 and 36,119.76 is: 49,843.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,335.20 : 91,539.60 = 36,119.76 : x
  2. Step 2: Convert to fraction form
    66,335.20/91,539.60 = 36,119.76/x
  3. Step 3: Cross multiply
    66,335.20x = 91,539.60 × 36,119.76
  4. Step 4: Simplify right side
    66,335.20x = 3,306,388,382.50
  5. Step 5: Solve for x
    x = 3,306,388,382.50/66,335.20
  6. Step 6: Final answer
    x = 49,843.65

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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.