Home / 83,474.19-115,173.72-49,490.64

Finding the Fourth Proportional to 83,474.19, 115,173.72 and 49,490.64

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Solution

The fourth proportional to 83,474.19, 115,173.72 and 49,490.64 is: 68,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,474.19 : 115,173.72 = 49,490.64 : x
  2. Step 2: Convert to fraction form
    83,474.19/115,173.72 = 49,490.64/x
  3. Step 3: Cross multiply
    83,474.19x = 115,173.72 × 49,490.64
  4. Step 4: Simplify right side
    83,474.19x = 5,700,021,113.98
  5. Step 5: Solve for x
    x = 5,700,021,113.98/83,474.19
  6. Step 6: Final answer
    x = 68,284.83

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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.