Home / 80,907.05-111,397.64-68,783.67

Finding the Fourth Proportional to 80,907.05, 111,397.64 and 68,783.67

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Solution

The fourth proportional to 80,907.05, 111,397.64 and 68,783.67 is: 94,705.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,907.05 : 111,397.64 = 68,783.67 : x
  2. Step 2: Convert to fraction form
    80,907.05/111,397.64 = 68,783.67/x
  3. Step 3: Cross multiply
    80,907.05x = 111,397.64 × 68,783.67
  4. Step 4: Simplify right side
    80,907.05x = 7,662,338,164.62
  5. Step 5: Solve for x
    x = 7,662,338,164.62/80,907.05
  6. Step 6: Final answer
    x = 94,705.44

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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.