Home / 79,145.43-118,774.98-31,121.34

Finding the Fourth Proportional to 79,145.43, 118,774.98 and 31,121.34

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Solution

The fourth proportional to 79,145.43, 118,774.98 and 31,121.34 is: 46,704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,145.43 : 118,774.98 = 31,121.34 : x
  2. Step 2: Convert to fraction form
    79,145.43/118,774.98 = 31,121.34/x
  3. Step 3: Cross multiply
    79,145.43x = 118,774.98 × 31,121.34
  4. Step 4: Simplify right side
    79,145.43x = 3,696,436,536.07
  5. Step 5: Solve for x
    x = 3,696,436,536.07/79,145.43
  6. Step 6: Final answer
    x = 46,704.36

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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.