Home / 45,121.79-67,707.29-20,160.83

Finding the Fourth Proportional to 45,121.79, 67,707.29 and 20,160.83

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Solution

The fourth proportional to 45,121.79, 67,707.29 and 20,160.83 is: 30,252.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,121.79 : 67,707.29 = 20,160.83 : x
  2. Step 2: Convert to fraction form
    45,121.79/67,707.29 = 20,160.83/x
  3. Step 3: Cross multiply
    45,121.79x = 67,707.29 × 20,160.83
  4. Step 4: Simplify right side
    45,121.79x = 1,365,035,383.12
  5. Step 5: Solve for x
    x = 1,365,035,383.12/45,121.79
  6. Step 6: Final answer
    x = 30,252.24

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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.