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Finding the Fourth Proportional to 56,206.72, 84,300.90 and 18,765.28

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Solution

The fourth proportional to 56,206.72, 84,300.90 and 18,765.28 is: 28,144.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,206.72 : 84,300.90 = 18,765.28 : x
  2. Step 2: Convert to fraction form
    56,206.72/84,300.90 = 18,765.28/x
  3. Step 3: Cross multiply
    56,206.72x = 84,300.90 × 18,765.28
  4. Step 4: Simplify right side
    56,206.72x = 1,581,929,992.75
  5. Step 5: Solve for x
    x = 1,581,929,992.75/56,206.72
  6. Step 6: Final answer
    x = 28,144.86

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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.