Home / 79,690.45-109,973.56-43,881.28

Finding the Fourth Proportional to 79,690.45, 109,973.56 and 43,881.28

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Solution

The fourth proportional to 79,690.45, 109,973.56 and 43,881.28 is: 60,556.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,690.45 : 109,973.56 = 43,881.28 : x
  2. Step 2: Convert to fraction form
    79,690.45/109,973.56 = 43,881.28/x
  3. Step 3: Cross multiply
    79,690.45x = 109,973.56 × 43,881.28
  4. Step 4: Simplify right side
    79,690.45x = 4,825,780,578.96
  5. Step 5: Solve for x
    x = 4,825,780,578.96/79,690.45
  6. Step 6: Final answer
    x = 60,556.57

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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.