Home / 49,579.75-74,369.63-12,643.75

Finding the Fourth Proportional to 49,579.75, 74,369.63 and 12,643.75

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Solution

The fourth proportional to 49,579.75, 74,369.63 and 12,643.75 is: 18,965.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,579.75 : 74,369.63 = 12,643.75 : x
  2. Step 2: Convert to fraction form
    49,579.75/74,369.63 = 12,643.75/x
  3. Step 3: Cross multiply
    49,579.75x = 74,369.63 × 12,643.75
  4. Step 4: Simplify right side
    49,579.75x = 940,311,009.31
  5. Step 5: Solve for x
    x = 940,311,009.31/49,579.75
  6. Step 6: Final answer
    x = 18,965.63

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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.