Home / 81,716.45-112,766.09-45,417.71

Finding the Fourth Proportional to 81,716.45, 112,766.09 and 45,417.71

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Solution

The fourth proportional to 81,716.45, 112,766.09 and 45,417.71 is: 62,674.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,716.45 : 112,766.09 = 45,417.71 : x
  2. Step 2: Convert to fraction form
    81,716.45/112,766.09 = 45,417.71/x
  3. Step 3: Cross multiply
    81,716.45x = 112,766.09 × 45,417.71
  4. Step 4: Simplify right side
    81,716.45x = 5,121,577,628.28
  5. Step 5: Solve for x
    x = 5,121,577,628.28/81,716.45
  6. Step 6: Final answer
    x = 62,674.99

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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.