Home / 78,899.64-108,882-43,089.84

Finding the Fourth Proportional to 78,899.64, 108,882 and 43,089.84

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Solution

The fourth proportional to 78,899.64, 108,882 and 43,089.84 is: 59,464.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,899.64 : 108,882 = 43,089.84 : x
  2. Step 2: Convert to fraction form
    78,899.64/108,882 = 43,089.84/x
  3. Step 3: Cross multiply
    78,899.64x = 108,882 × 43,089.84
  4. Step 4: Simplify right side
    78,899.64x = 4,691,707,958.88
  5. Step 5: Solve for x
    x = 4,691,707,958.88/78,899.64
  6. Step 6: Final answer
    x = 59,464.25

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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.