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Finding the Fourth Proportional to 76,874.06, 115,311.30 and 21,470.06

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Solution

The fourth proportional to 76,874.06, 115,311.30 and 21,470.06 is: 32,205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,874.06 : 115,311.30 = 21,470.06 : x
  2. Step 2: Convert to fraction form
    76,874.06/115,311.30 = 21,470.06/x
  3. Step 3: Cross multiply
    76,874.06x = 115,311.30 × 21,470.06
  4. Step 4: Simplify right side
    76,874.06x = 2,475,740,737.44
  5. Step 5: Solve for x
    x = 2,475,740,737.44/76,874.06
  6. Step 6: Final answer
    x = 32,205.15

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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.