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Finding the Fourth Proportional to 56,309.85, 84,439.87 and 16,859.61

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Solution

The fourth proportional to 56,309.85, 84,439.87 and 16,859.61 is: 25,281.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,309.85 : 84,439.87 = 16,859.61 : x
  2. Step 2: Convert to fraction form
    56,309.85/84,439.87 = 16,859.61/x
  3. Step 3: Cross multiply
    56,309.85x = 84,439.87 × 16,859.61
  4. Step 4: Simplify right side
    56,309.85x = 1,423,623,234.50
  5. Step 5: Solve for x
    x = 1,423,623,234.50/56,309.85
  6. Step 6: Final answer
    x = 25,281.96

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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.