Home / 79,201.88-118,788.41-31,815.06

Finding the Fourth Proportional to 79,201.88, 118,788.41 and 31,815.06

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Solution

The fourth proportional to 79,201.88, 118,788.41 and 31,815.06 is: 47,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,201.88 : 118,788.41 = 31,815.06 : x
  2. Step 2: Convert to fraction form
    79,201.88/118,788.41 = 31,815.06/x
  3. Step 3: Cross multiply
    79,201.88x = 118,788.41 × 31,815.06
  4. Step 4: Simplify right side
    79,201.88x = 3,779,260,514.76
  5. Step 5: Solve for x
    x = 3,779,260,514.76/79,201.88
  6. Step 6: Final answer
    x = 47,716.80

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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.