Home / 79,121.40-118,739.28-31,097.16

Finding the Fourth Proportional to 79,121.40, 118,739.28 and 31,097.16

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Solution

The fourth proportional to 79,121.40, 118,739.28 and 31,097.16 is: 46,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,121.40 : 118,739.28 = 31,097.16 : x
  2. Step 2: Convert to fraction form
    79,121.40/118,739.28 = 31,097.16/x
  3. Step 3: Cross multiply
    79,121.40x = 118,739.28 × 31,097.16
  4. Step 4: Simplify right side
    79,121.40x = 3,692,454,388.44
  5. Step 5: Solve for x
    x = 3,692,454,388.44/79,121.40
  6. Step 6: Final answer
    x = 46,668.21

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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.