Home / 78,313.32-108,072.09-44,320.86

Finding the Fourth Proportional to 78,313.32, 108,072.09 and 44,320.86

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Solution

The fourth proportional to 78,313.32, 108,072.09 and 44,320.86 is: 61,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313.32 : 108,072.09 = 44,320.86 : x
  2. Step 2: Convert to fraction form
    78,313.32/108,072.09 = 44,320.86/x
  3. Step 3: Cross multiply
    78,313.32x = 108,072.09 × 44,320.86
  4. Step 4: Simplify right side
    78,313.32x = 4,789,847,970.80
  5. Step 5: Solve for x
    x = 4,789,847,970.80/78,313.32
  6. Step 6: Final answer
    x = 61,162.62

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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.