Home / 78,890.64-108,868.37-43,080.54

Finding the Fourth Proportional to 78,890.64, 108,868.37 and 43,080.54

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Solution

The fourth proportional to 78,890.64, 108,868.37 and 43,080.54 is: 59,450.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,890.64 : 108,868.37 = 43,080.54 : x
  2. Step 2: Convert to fraction form
    78,890.64/108,868.37 = 43,080.54/x
  3. Step 3: Cross multiply
    78,890.64x = 108,868.37 × 43,080.54
  4. Step 4: Simplify right side
    78,890.64x = 4,690,107,953.12
  5. Step 5: Solve for x
    x = 4,690,107,953.12/78,890.64
  6. Step 6: Final answer
    x = 59,450.75

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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.