Home / 66,205.28-99,145.92-42,760.64

Finding the Fourth Proportional to 66,205.28, 99,145.92 and 42,760.64

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Solution

The fourth proportional to 66,205.28, 99,145.92 and 42,760.64 is: 64,036.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,205.28 : 99,145.92 = 42,760.64 : x
  2. Step 2: Convert to fraction form
    66,205.28/99,145.92 = 42,760.64/x
  3. Step 3: Cross multiply
    66,205.28x = 99,145.92 × 42,760.64
  4. Step 4: Simplify right side
    66,205.28x = 4,239,542,992.59
  5. Step 5: Solve for x
    x = 4,239,542,992.59/66,205.28
  6. Step 6: Final answer
    x = 64,036.33

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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.