Home / 78,973.62-108,983.40-43,163.88

Finding the Fourth Proportional to 78,973.62, 108,983.40 and 43,163.88

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Solution

The fourth proportional to 78,973.62, 108,983.40 and 43,163.88 is: 59,566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,973.62 : 108,983.40 = 43,163.88 : x
  2. Step 2: Convert to fraction form
    78,973.62/108,983.40 = 43,163.88/x
  3. Step 3: Cross multiply
    78,973.62x = 108,983.40 × 43,163.88
  4. Step 4: Simplify right side
    78,973.62x = 4,704,146,399.59
  5. Step 5: Solve for x
    x = 4,704,146,399.59/78,973.62
  6. Step 6: Final answer
    x = 59,566.05

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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.