Home / 72,558.17-108,856.94-30,416.09

Finding the Fourth Proportional to 72,558.17, 108,856.94 and 30,416.09

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Solution

The fourth proportional to 72,558.17, 108,856.94 and 30,416.09 is: 45,632.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,558.17 : 108,856.94 = 30,416.09 : x
  2. Step 2: Convert to fraction form
    72,558.17/108,856.94 = 30,416.09/x
  3. Step 3: Cross multiply
    72,558.17x = 108,856.94 × 30,416.09
  4. Step 4: Simplify right side
    72,558.17x = 3,311,001,787.80
  5. Step 5: Solve for x
    x = 3,311,001,787.80/72,558.17
  6. Step 6: Final answer
    x = 45,632.38

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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.