Home / 105,687.13-145,847.64-57,940.87

Finding the Fourth Proportional to 105,687.13, 145,847.64 and 57,940.87

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Solution

The fourth proportional to 105,687.13, 145,847.64 and 57,940.87 is: 79,958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,687.13 : 145,847.64 = 57,940.87 : x
  2. Step 2: Convert to fraction form
    105,687.13/145,847.64 = 57,940.87/x
  3. Step 3: Cross multiply
    105,687.13x = 145,847.64 × 57,940.87
  4. Step 4: Simplify right side
    105,687.13x = 8,450,539,149.05
  5. Step 5: Solve for x
    x = 8,450,539,149.05/105,687.13
  6. Step 6: Final answer
    x = 79,958.07

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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.