Home / 77,960.12-116,939.14-18,795.31

Finding the Fourth Proportional to 77,960.12, 116,939.14 and 18,795.31

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Solution

The fourth proportional to 77,960.12, 116,939.14 and 18,795.31 is: 28,192.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,960.12 : 116,939.14 = 18,795.31 : x
  2. Step 2: Convert to fraction form
    77,960.12/116,939.14 = 18,795.31/x
  3. Step 3: Cross multiply
    77,960.12x = 116,939.14 × 18,795.31
  4. Step 4: Simplify right side
    77,960.12x = 2,197,907,153.82
  5. Step 5: Solve for x
    x = 2,197,907,153.82/77,960.12
  6. Step 6: Final answer
    x = 28,192.71

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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.