Home / 45,942.85-68,914.59-12,664.72

Finding the Fourth Proportional to 45,942.85, 68,914.59 and 12,664.72

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Solution

The fourth proportional to 45,942.85, 68,914.59 and 12,664.72 is: 18,997.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,942.85 : 68,914.59 = 12,664.72 : x
  2. Step 2: Convert to fraction form
    45,942.85/68,914.59 = 12,664.72/x
  3. Step 3: Cross multiply
    45,942.85x = 68,914.59 × 12,664.72
  4. Step 4: Simplify right side
    45,942.85x = 872,783,986.26
  5. Step 5: Solve for x
    x = 872,783,986.26/45,942.85
  6. Step 6: Final answer
    x = 18,997.17

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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.