Home / 67,986.39-101,993.99-21,242.79

Finding the Fourth Proportional to 67,986.39, 101,993.99 and 21,242.79

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Solution

The fourth proportional to 67,986.39, 101,993.99 and 21,242.79 is: 31,868.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,986.39 : 101,993.99 = 21,242.79 : x
  2. Step 2: Convert to fraction form
    67,986.39/101,993.99 = 21,242.79/x
  3. Step 3: Cross multiply
    67,986.39x = 101,993.99 × 21,242.79
  4. Step 4: Simplify right side
    67,986.39x = 2,166,636,804.62
  5. Step 5: Solve for x
    x = 2,166,636,804.62/67,986.39
  6. Step 6: Final answer
    x = 31,868.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.