Home / 48,456.36-72,665.51-20,389.86

Finding the Fourth Proportional to 48,456.36, 72,665.51 and 20,389.86

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Solution

The fourth proportional to 48,456.36, 72,665.51 and 20,389.86 is: 30,576.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,456.36 : 72,665.51 = 20,389.86 : x
  2. Step 2: Convert to fraction form
    48,456.36/72,665.51 = 20,389.86/x
  3. Step 3: Cross multiply
    48,456.36x = 72,665.51 × 20,389.86
  4. Step 4: Simplify right side
    48,456.36x = 1,481,639,473.78
  5. Step 5: Solve for x
    x = 1,481,639,473.78/48,456.36
  6. Step 6: Final answer
    x = 30,576.78

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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.