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Finding the Fourth Proportional to 34,920.78, 52,379.76 and 8,624.85

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Solution

The fourth proportional to 34,920.78, 52,379.76 and 8,624.85 is: 12,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,920.78 : 52,379.76 = 8,624.85 : x
  2. Step 2: Convert to fraction form
    34,920.78/52,379.76 = 8,624.85/x
  3. Step 3: Cross multiply
    34,920.78x = 52,379.76 × 8,624.85
  4. Step 4: Simplify right side
    34,920.78x = 451,767,573.04
  5. Step 5: Solve for x
    x = 451,767,573.04/34,920.78
  6. Step 6: Final answer
    x = 12,936.93

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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.