Home / 76,739.15-105,916.37-51,574.07

Finding the Fourth Proportional to 76,739.15, 105,916.37 and 51,574.07

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Solution

The fourth proportional to 76,739.15, 105,916.37 and 51,574.07 is: 71,183.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,739.15 : 105,916.37 = 51,574.07 : x
  2. Step 2: Convert to fraction form
    76,739.15/105,916.37 = 51,574.07/x
  3. Step 3: Cross multiply
    76,739.15x = 105,916.37 × 51,574.07
  4. Step 4: Simplify right side
    76,739.15x = 5,462,538,280.53
  5. Step 5: Solve for x
    x = 5,462,538,280.53/76,739.15
  6. Step 6: Final answer
    x = 71,183.20

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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.