Home / 81,836.64-112,917.64-47,838.56

Finding the Fourth Proportional to 81,836.64, 112,917.64 and 47,838.56

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Solution

The fourth proportional to 81,836.64, 112,917.64 and 47,838.56 is: 66,007.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,836.64 : 112,917.64 = 47,838.56 : x
  2. Step 2: Convert to fraction form
    81,836.64/112,917.64 = 47,838.56/x
  3. Step 3: Cross multiply
    81,836.64x = 112,917.64 × 47,838.56
  4. Step 4: Simplify right side
    81,836.64x = 5,401,817,296.20
  5. Step 5: Solve for x
    x = 5,401,817,296.20/81,836.64
  6. Step 6: Final answer
    x = 66,007.32

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1.5x scale

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.