Home / 86,709.75-119,669.19-48,986.43

Finding the Fourth Proportional to 86,709.75, 119,669.19 and 48,986.43

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Solution

The fourth proportional to 86,709.75, 119,669.19 and 48,986.43 is: 67,606.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,709.75 : 119,669.19 = 48,986.43 : x
  2. Step 2: Convert to fraction form
    86,709.75/119,669.19 = 48,986.43/x
  3. Step 3: Cross multiply
    86,709.75x = 119,669.19 × 48,986.43
  4. Step 4: Simplify right side
    86,709.75x = 5,862,166,399.09
  5. Step 5: Solve for x
    x = 5,862,166,399.09/86,709.75
  6. Step 6: Final answer
    x = 67,606.77

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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.