Home / 105,559.76-145,674.04-57,817.56

Finding the Fourth Proportional to 105,559.76, 145,674.04 and 57,817.56

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Solution

The fourth proportional to 105,559.76, 145,674.04 and 57,817.56 is: 79,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,559.76 : 145,674.04 = 57,817.56 : x
  2. Step 2: Convert to fraction form
    105,559.76/145,674.04 = 57,817.56/x
  3. Step 3: Cross multiply
    105,559.76x = 145,674.04 × 57,817.56
  4. Step 4: Simplify right side
    105,559.76x = 8,422,517,548.14
  5. Step 5: Solve for x
    x = 8,422,517,548.14/105,559.76
  6. Step 6: Final answer
    x = 79,789.09

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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.