Home / 91,039.92-136,379.65-42,942.66

Finding the Fourth Proportional to 91,039.92, 136,379.65 and 42,942.66

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Solution

The fourth proportional to 91,039.92, 136,379.65 and 42,942.66 is: 64,328.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,039.92 : 136,379.65 = 42,942.66 : x
  2. Step 2: Convert to fraction form
    91,039.92/136,379.65 = 42,942.66/x
  3. Step 3: Cross multiply
    91,039.92x = 136,379.65 × 42,942.66
  4. Step 4: Simplify right side
    91,039.92x = 5,856,504,940.87
  5. Step 5: Solve for x
    x = 5,856,504,940.87/91,039.92
  6. Step 6: Final answer
    x = 64,328.98

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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.