Home / 75,349.35-103,987.29-49,811.42

Finding the Fourth Proportional to 75,349.35, 103,987.29 and 49,811.42

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Solution

The fourth proportional to 75,349.35, 103,987.29 and 49,811.42 is: 68,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,349.35 : 103,987.29 = 49,811.42 : x
  2. Step 2: Convert to fraction form
    75,349.35/103,987.29 = 49,811.42/x
  3. Step 3: Cross multiply
    75,349.35x = 103,987.29 × 49,811.42
  4. Step 4: Simplify right side
    75,349.35x = 5,179,754,913.94
  5. Step 5: Solve for x
    x = 5,179,754,913.94/75,349.35
  6. Step 6: Final answer
    x = 68,743.20

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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.