Home / 81,623.62-112,634.42-45,806.71

Finding the Fourth Proportional to 81,623.62, 112,634.42 and 45,806.71

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Solution

The fourth proportional to 81,623.62, 112,634.42 and 45,806.71 is: 63,209.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,623.62 : 112,634.42 = 45,806.71 : x
  2. Step 2: Convert to fraction form
    81,623.62/112,634.42 = 45,806.71/x
  3. Step 3: Cross multiply
    81,623.62x = 112,634.42 × 45,806.71
  4. Step 4: Simplify right side
    81,623.62x = 5,159,411,983.92
  5. Step 5: Solve for x
    x = 5,159,411,983.92/81,623.62
  6. Step 6: Final answer
    x = 63,209.79

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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.