Home / 76,320.96-105,311.52-43,612.90

Finding the Fourth Proportional to 76,320.96, 105,311.52 and 43,612.90

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Solution

The fourth proportional to 76,320.96, 105,311.52 and 43,612.90 is: 60,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,320.96 : 105,311.52 = 43,612.90 : x
  2. Step 2: Convert to fraction form
    76,320.96/105,311.52 = 43,612.90/x
  3. Step 3: Cross multiply
    76,320.96x = 105,311.52 × 43,612.90
  4. Step 4: Simplify right side
    76,320.96x = 4,592,940,790.61
  5. Step 5: Solve for x
    x = 4,592,940,790.61/76,320.96
  6. Step 6: Final answer
    x = 60,179.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.