Home / 76,739.14-105,916.35-51,574.06

Finding the Fourth Proportional to 76,739.14, 105,916.35 and 51,574.06

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Solution

The fourth proportional to 76,739.14, 105,916.35 and 51,574.06 is: 71,183.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,739.14 : 105,916.35 = 51,574.06 : x
  2. Step 2: Convert to fraction form
    76,739.14/105,916.35 = 51,574.06/x
  3. Step 3: Cross multiply
    76,739.14x = 105,916.35 × 51,574.06
  4. Step 4: Simplify right side
    76,739.14x = 5,462,536,189.88
  5. Step 5: Solve for x
    x = 5,462,536,189.88/76,739.14
  6. Step 6: Final answer
    x = 71,183.18

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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.