Home / 80,939.36-111,696.95-45,131.67

Finding the Fourth Proportional to 80,939.36, 111,696.95 and 45,131.67

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Solution

The fourth proportional to 80,939.36, 111,696.95 and 45,131.67 is: 62,282.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,939.36 : 111,696.95 = 45,131.67 : x
  2. Step 2: Convert to fraction form
    80,939.36/111,696.95 = 45,131.67/x
  3. Step 3: Cross multiply
    80,939.36x = 111,696.95 × 45,131.67
  4. Step 4: Simplify right side
    80,939.36x = 5,041,069,661.75
  5. Step 5: Solve for x
    x = 5,041,069,661.75/80,939.36
  6. Step 6: Final answer
    x = 62,282.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.