Home / 78,928.14-108,922.44-43,120.46

Finding the Fourth Proportional to 78,928.14, 108,922.44 and 43,120.46

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Solution

The fourth proportional to 78,928.14, 108,922.44 and 43,120.46 is: 59,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928.14 : 108,922.44 = 43,120.46 : x
  2. Step 2: Convert to fraction form
    78,928.14/108,922.44 = 43,120.46/x
  3. Step 3: Cross multiply
    78,928.14x = 108,922.44 × 43,120.46
  4. Step 4: Simplify right side
    78,928.14x = 4,696,785,717.12
  5. Step 5: Solve for x
    x = 4,696,785,717.12/78,928.14
  6. Step 6: Final answer
    x = 59,507.11

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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.