Home / 83,408.81-115,132.21-50,703.10

Finding the Fourth Proportional to 83,408.81, 115,132.21 and 50,703.10

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Solution

The fourth proportional to 83,408.81, 115,132.21 and 50,703.10 is: 69,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,408.81 : 115,132.21 = 50,703.10 : x
  2. Step 2: Convert to fraction form
    83,408.81/115,132.21 = 50,703.10/x
  3. Step 3: Cross multiply
    83,408.81x = 115,132.21 × 50,703.10
  4. Step 4: Simplify right side
    83,408.81x = 5,837,559,542.26
  5. Step 5: Solve for x
    x = 5,837,559,542.26/83,408.81
  6. Step 6: Final answer
    x = 69,987.33

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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.