Home / 77,369.75-116,106.51-28,121.75

Finding the Fourth Proportional to 77,369.75, 116,106.51 and 28,121.75

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Solution

The fourth proportional to 77,369.75, 116,106.51 and 28,121.75 is: 42,201.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,369.75 : 116,106.51 = 28,121.75 : x
  2. Step 2: Convert to fraction form
    77,369.75/116,106.51 = 28,121.75/x
  3. Step 3: Cross multiply
    77,369.75x = 116,106.51 × 28,121.75
  4. Step 4: Simplify right side
    77,369.75x = 3,265,118,247.59
  5. Step 5: Solve for x
    x = 3,265,118,247.59/77,369.75
  6. Step 6: Final answer
    x = 42,201.48

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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.