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Finding the Fourth Proportional to 112,687.65, 168,785.84 and 56,429.64

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Solution

The fourth proportional to 112,687.65, 168,785.84 and 56,429.64 is: 84,521.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,687.65 : 168,785.84 = 56,429.64 : x
  2. Step 2: Convert to fraction form
    112,687.65/168,785.84 = 56,429.64/x
  3. Step 3: Cross multiply
    112,687.65x = 168,785.84 × 56,429.64
  4. Step 4: Simplify right side
    112,687.65x = 9,524,524,329.37
  5. Step 5: Solve for x
    x = 9,524,524,329.37/112,687.65
  6. Step 6: Final answer
    x = 84,521.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.