Home / 81,709.47-112,760.60-45,414.32

Finding the Fourth Proportional to 81,709.47, 112,760.60 and 45,414.32

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Solution

The fourth proportional to 81,709.47, 112,760.60 and 45,414.32 is: 62,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,709.47 : 112,760.60 = 45,414.32 : x
  2. Step 2: Convert to fraction form
    81,709.47/112,760.60 = 45,414.32/x
  3. Step 3: Cross multiply
    81,709.47x = 112,760.60 × 45,414.32
  4. Step 4: Simplify right side
    81,709.47x = 5,120,945,180.92
  5. Step 5: Solve for x
    x = 5,120,945,180.92/81,709.47
  6. Step 6: Final answer
    x = 62,672.60

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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.