Home / 43,066.76-64,540-20,874.24

Finding the Fourth Proportional to 43,066.76, 64,540 and 20,874.24

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Solution

The fourth proportional to 43,066.76, 64,540 and 20,874.24 is: 31,282.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,066.76 : 64,540 = 20,874.24 : x
  2. Step 2: Convert to fraction form
    43,066.76/64,540 = 20,874.24/x
  3. Step 3: Cross multiply
    43,066.76x = 64,540 × 20,874.24
  4. Step 4: Simplify right side
    43,066.76x = 1,347,223,449.60
  5. Step 5: Solve for x
    x = 1,347,223,449.60/43,066.76
  6. Step 6: Final answer
    x = 31,282.21

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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.