Home / 56,390.85-84,497.28-20,803.20

Finding the Fourth Proportional to 56,390.85, 84,497.28 and 20,803.20

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Solution

The fourth proportional to 56,390.85, 84,497.28 and 20,803.20 is: 31,171.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,390.85 : 84,497.28 = 20,803.20 : x
  2. Step 2: Convert to fraction form
    56,390.85/84,497.28 = 20,803.20/x
  3. Step 3: Cross multiply
    56,390.85x = 84,497.28 × 20,803.20
  4. Step 4: Simplify right side
    56,390.85x = 1,757,813,815.30
  5. Step 5: Solve for x
    x = 1,757,813,815.30/56,390.85
  6. Step 6: Final answer
    x = 31,171.97

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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.