Home / 49,942.94-74,917.28-18,778.46

Finding the Fourth Proportional to 49,942.94, 74,917.28 and 18,778.46

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Solution

The fourth proportional to 49,942.94, 74,917.28 and 18,778.46 is: 28,168.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,942.94 : 74,917.28 = 18,778.46 : x
  2. Step 2: Convert to fraction form
    49,942.94/74,917.28 = 18,778.46/x
  3. Step 3: Cross multiply
    49,942.94x = 74,917.28 × 18,778.46
  4. Step 4: Simplify right side
    49,942.94x = 1,406,830,818.15
  5. Step 5: Solve for x
    x = 1,406,830,818.15/49,942.94
  6. Step 6: Final answer
    x = 28,168.77

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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.