Home / 83,431.85-115,135.36-45,190.53

Finding the Fourth Proportional to 83,431.85, 115,135.36 and 45,190.53

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Solution

The fourth proportional to 83,431.85, 115,135.36 and 45,190.53 is: 62,362.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,431.85 : 115,135.36 = 45,190.53 : x
  2. Step 2: Convert to fraction form
    83,431.85/115,135.36 = 45,190.53/x
  3. Step 3: Cross multiply
    83,431.85x = 115,135.36 × 45,190.53
  4. Step 4: Simplify right side
    83,431.85x = 5,203,027,827.16
  5. Step 5: Solve for x
    x = 5,203,027,827.16/83,431.85
  6. Step 6: Final answer
    x = 62,362.61

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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.