Home / 76,631.06-105,716.13-55,376.66

Finding the Fourth Proportional to 76,631.06, 105,716.13 and 55,376.66

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Solution

The fourth proportional to 76,631.06, 105,716.13 and 55,376.66 is: 76,394.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,631.06 : 105,716.13 = 55,376.66 : x
  2. Step 2: Convert to fraction form
    76,631.06/105,716.13 = 55,376.66/x
  3. Step 3: Cross multiply
    76,631.06x = 105,716.13 × 55,376.66
  4. Step 4: Simplify right side
    76,631.06x = 5,854,206,187.53
  5. Step 5: Solve for x
    x = 5,854,206,187.53/76,631.06
  6. Step 6: Final answer
    x = 76,394.69

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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.