Home / 55,359.70-82,990.24-20,291.15

Finding the Fourth Proportional to 55,359.70, 82,990.24 and 20,291.15

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Solution

The fourth proportional to 55,359.70, 82,990.24 and 20,291.15 is: 30,418.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,359.70 : 82,990.24 = 20,291.15 : x
  2. Step 2: Convert to fraction form
    55,359.70/82,990.24 = 20,291.15/x
  3. Step 3: Cross multiply
    55,359.70x = 82,990.24 × 20,291.15
  4. Step 4: Simplify right side
    55,359.70x = 1,683,967,565.12
  5. Step 5: Solve for x
    x = 1,683,967,565.12/55,359.70
  6. Step 6: Final answer
    x = 30,418.66

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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.