Home / 78,815.92-108,765.04-43,005.16

Finding the Fourth Proportional to 78,815.92, 108,765.04 and 43,005.16

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Solution

The fourth proportional to 78,815.92, 108,765.04 and 43,005.16 is: 59,346.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,815.92 : 108,765.04 = 43,005.16 : x
  2. Step 2: Convert to fraction form
    78,815.92/108,765.04 = 43,005.16/x
  3. Step 3: Cross multiply
    78,815.92x = 108,765.04 × 43,005.16
  4. Step 4: Simplify right side
    78,815.92x = 4,677,457,947.61
  5. Step 5: Solve for x
    x = 4,677,457,947.61/78,815.92
  6. Step 6: Final answer
    x = 59,346.61

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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.