Home / 78,928.77-108,919.92-43,118.94

Finding the Fourth Proportional to 78,928.77, 108,919.92 and 43,118.94

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Solution

The fourth proportional to 78,928.77, 108,919.92 and 43,118.94 is: 59,503.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928.77 : 108,919.92 = 43,118.94 : x
  2. Step 2: Convert to fraction form
    78,928.77/108,919.92 = 43,118.94/x
  3. Step 3: Cross multiply
    78,928.77x = 108,919.92 × 43,118.94
  4. Step 4: Simplify right side
    78,928.77x = 4,696,511,495.28
  5. Step 5: Solve for x
    x = 4,696,511,495.28/78,928.77
  6. Step 6: Final answer
    x = 59,503.16

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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.