Home / 114,991.12-172,460.76-31,891.60

Finding the Fourth Proportional to 114,991.12, 172,460.76 and 31,891.60

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Solution

The fourth proportional to 114,991.12, 172,460.76 and 31,891.60 is: 47,830.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,991.12 : 172,460.76 = 31,891.60 : x
  2. Step 2: Convert to fraction form
    114,991.12/172,460.76 = 31,891.60/x
  3. Step 3: Cross multiply
    114,991.12x = 172,460.76 × 31,891.60
  4. Step 4: Simplify right side
    114,991.12x = 5,500,049,573.62
  5. Step 5: Solve for x
    x = 5,500,049,573.62/114,991.12
  6. Step 6: Final answer
    x = 47,830.21

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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.