Home / 78,067.01-117,116.70-31,323.53

Finding the Fourth Proportional to 78,067.01, 117,116.70 and 31,323.53

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Solution

The fourth proportional to 78,067.01, 117,116.70 and 31,323.53 is: 46,991.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,067.01 : 117,116.70 = 31,323.53 : x
  2. Step 2: Convert to fraction form
    78,067.01/117,116.70 = 31,323.53/x
  3. Step 3: Cross multiply
    78,067.01x = 117,116.70 × 31,323.53
  4. Step 4: Simplify right side
    78,067.01x = 3,668,507,880.37
  5. Step 5: Solve for x
    x = 3,668,507,880.37/78,067.01
  6. Step 6: Final answer
    x = 46,991.78

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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.