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Finding the Fourth Proportional to 51,281.80, 76,929.90 and 16,217.80

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Solution

The fourth proportional to 51,281.80, 76,929.90 and 16,217.80 is: 24,328.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,281.80 : 76,929.90 = 16,217.80 : x
  2. Step 2: Convert to fraction form
    51,281.80/76,929.90 = 16,217.80/x
  3. Step 3: Cross multiply
    51,281.80x = 76,929.90 × 16,217.80
  4. Step 4: Simplify right side
    51,281.80x = 1,247,633,732.22
  5. Step 5: Solve for x
    x = 1,247,633,732.22/51,281.80
  6. Step 6: Final answer
    x = 24,328.98

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1.5x scale

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.