Home / 42,827.80-64,340.22-30,378.64

Finding the Fourth Proportional to 42,827.80, 64,340.22 and 30,378.64

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Solution

The fourth proportional to 42,827.80, 64,340.22 and 30,378.64 is: 45,637.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,827.80 : 64,340.22 = 30,378.64 : x
  2. Step 2: Convert to fraction form
    42,827.80/64,340.22 = 30,378.64/x
  3. Step 3: Cross multiply
    42,827.80x = 64,340.22 × 30,378.64
  4. Step 4: Simplify right side
    42,827.80x = 1,954,568,380.90
  5. Step 5: Solve for x
    x = 1,954,568,380.90/42,827.80
  6. Step 6: Final answer
    x = 45,637.84

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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.