Home / 56,205.72-84,299.40-18,764.28

Finding the Fourth Proportional to 56,205.72, 84,299.40 and 18,764.28

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Solution

The fourth proportional to 56,205.72, 84,299.40 and 18,764.28 is: 28,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,205.72 : 84,299.40 = 18,764.28 : x
  2. Step 2: Convert to fraction form
    56,205.72/84,299.40 = 18,764.28/x
  3. Step 3: Cross multiply
    56,205.72x = 84,299.40 × 18,764.28
  4. Step 4: Simplify right side
    56,205.72x = 1,581,817,545.43
  5. Step 5: Solve for x
    x = 1,581,817,545.43/56,205.72
  6. Step 6: Final answer
    x = 28,143.36

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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.