Home / 81,340.91-112,171.58-63,429.38

Finding the Fourth Proportional to 81,340.91, 112,171.58 and 63,429.38

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Solution

The fourth proportional to 81,340.91, 112,171.58 and 63,429.38 is: 87,471.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,340.91 : 112,171.58 = 63,429.38 : x
  2. Step 2: Convert to fraction form
    81,340.91/112,171.58 = 63,429.38/x
  3. Step 3: Cross multiply
    81,340.91x = 112,171.58 × 63,429.38
  4. Step 4: Simplify right side
    81,340.91x = 7,114,973,212.16
  5. Step 5: Solve for x
    x = 7,114,973,212.16/81,340.91
  6. Step 6: Final answer
    x = 87,471.04

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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.