Home / 55,127.60-82,633.80-30,129.20

Finding the Fourth Proportional to 55,127.60, 82,633.80 and 30,129.20

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Solution

The fourth proportional to 55,127.60, 82,633.80 and 30,129.20 is: 45,162.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,127.60 : 82,633.80 = 30,129.20 : x
  2. Step 2: Convert to fraction form
    55,127.60/82,633.80 = 30,129.20/x
  3. Step 3: Cross multiply
    55,127.60x = 82,633.80 × 30,129.20
  4. Step 4: Simplify right side
    55,127.60x = 2,489,690,286.96
  5. Step 5: Solve for x
    x = 2,489,690,286.96/55,127.60
  6. Step 6: Final answer
    x = 45,162.32

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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.