Home / 74,378.94-111,569.33-21,789.50

Finding the Fourth Proportional to 74,378.94, 111,569.33 and 21,789.50

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Solution

The fourth proportional to 74,378.94, 111,569.33 and 21,789.50 is: 32,684.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,378.94 : 111,569.33 = 21,789.50 : x
  2. Step 2: Convert to fraction form
    74,378.94/111,569.33 = 21,789.50/x
  3. Step 3: Cross multiply
    74,378.94x = 111,569.33 × 21,789.50
  4. Step 4: Simplify right side
    74,378.94x = 2,431,039,249.24
  5. Step 5: Solve for x
    x = 2,431,039,249.24/74,378.94
  6. Step 6: Final answer
    x = 32,684.51

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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.