Home / 75,172.35-103,735.13-42,908.63

Finding the Fourth Proportional to 75,172.35, 103,735.13 and 42,908.63

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Solution

The fourth proportional to 75,172.35, 103,735.13 and 42,908.63 is: 59,212.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,172.35 : 103,735.13 = 42,908.63 : x
  2. Step 2: Convert to fraction form
    75,172.35/103,735.13 = 42,908.63/x
  3. Step 3: Cross multiply
    75,172.35x = 103,735.13 × 42,908.63
  4. Step 4: Simplify right side
    75,172.35x = 4,451,131,944.56
  5. Step 5: Solve for x
    x = 4,451,131,944.56/75,172.35
  6. Step 6: Final answer
    x = 59,212.36

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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.