Home / 81,731.19-112,785.91-45,922.71

Finding the Fourth Proportional to 81,731.19, 112,785.91 and 45,922.71

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Solution

The fourth proportional to 81,731.19, 112,785.91 and 45,922.71 is: 63,371.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,731.19 : 112,785.91 = 45,922.71 : x
  2. Step 2: Convert to fraction form
    81,731.19/112,785.91 = 45,922.71/x
  3. Step 3: Cross multiply
    81,731.19x = 112,785.91 × 45,922.71
  4. Step 4: Simplify right side
    81,731.19x = 5,179,434,637.02
  5. Step 5: Solve for x
    x = 5,179,434,637.02/81,731.19
  6. Step 6: Final answer
    x = 63,371.58

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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.