Home / 76,948.33-115,430.46-20,788.75

Finding the Fourth Proportional to 76,948.33, 115,430.46 and 20,788.75

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Solution

The fourth proportional to 76,948.33, 115,430.46 and 20,788.75 is: 31,185.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,948.33 : 115,430.46 = 20,788.75 : x
  2. Step 2: Convert to fraction form
    76,948.33/115,430.46 = 20,788.75/x
  3. Step 3: Cross multiply
    76,948.33x = 115,430.46 × 20,788.75
  4. Step 4: Simplify right side
    76,948.33x = 2,399,654,975.33
  5. Step 5: Solve for x
    x = 2,399,654,975.33/76,948.33
  6. Step 6: Final answer
    x = 31,185.28

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1.5x scale

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.