Home / 81,410.74-112,346.82-49,579.64

Finding the Fourth Proportional to 81,410.74, 112,346.82 and 49,579.64

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Solution

The fourth proportional to 81,410.74, 112,346.82 and 49,579.64 is: 68,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,410.74 : 112,346.82 = 49,579.64 : x
  2. Step 2: Convert to fraction form
    81,410.74/112,346.82 = 49,579.64/x
  3. Step 3: Cross multiply
    81,410.74x = 112,346.82 × 49,579.64
  4. Step 4: Simplify right side
    81,410.74x = 5,570,114,890.74
  5. Step 5: Solve for x
    x = 5,570,114,890.74/81,410.74
  6. Step 6: Final answer
    x = 68,419.90

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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.