Home / 81,913.64-113,039.70-47,945.48

Finding the Fourth Proportional to 81,913.64, 113,039.70 and 47,945.48

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Solution

The fourth proportional to 81,913.64, 113,039.70 and 47,945.48 is: 66,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,913.64 : 113,039.70 = 47,945.48 : x
  2. Step 2: Convert to fraction form
    81,913.64/113,039.70 = 47,945.48/x
  3. Step 3: Cross multiply
    81,913.64x = 113,039.70 × 47,945.48
  4. Step 4: Simplify right side
    81,913.64x = 5,419,742,675.56
  5. Step 5: Solve for x
    x = 5,419,742,675.56/81,913.64
  6. Step 6: Final answer
    x = 66,164.10

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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.