Home / 72,760.64-109,140.62-20,169.95

Finding the Fourth Proportional to 72,760.64, 109,140.62 and 20,169.95

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Solution

The fourth proportional to 72,760.64, 109,140.62 and 20,169.95 is: 30,254.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,760.64 : 109,140.62 = 20,169.95 : x
  2. Step 2: Convert to fraction form
    72,760.64/109,140.62 = 20,169.95/x
  3. Step 3: Cross multiply
    72,760.64x = 109,140.62 × 20,169.95
  4. Step 4: Simplify right side
    72,760.64x = 2,201,360,201.82
  5. Step 5: Solve for x
    x = 2,201,360,201.82/72,760.64
  6. Step 6: Final answer
    x = 30,254.82

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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.