Home / 42,788.24-64,163.61-20,305.32

Finding the Fourth Proportional to 42,788.24, 64,163.61 and 20,305.32

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Solution

The fourth proportional to 42,788.24, 64,163.61 and 20,305.32 is: 30,449.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,788.24 : 64,163.61 = 20,305.32 : x
  2. Step 2: Convert to fraction form
    42,788.24/64,163.61 = 20,305.32/x
  3. Step 3: Cross multiply
    42,788.24x = 64,163.61 × 20,305.32
  4. Step 4: Simplify right side
    42,788.24x = 1,302,862,633.41
  5. Step 5: Solve for x
    x = 1,302,862,633.41/42,788.24
  6. Step 6: Final answer
    x = 30,449.09

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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.