Home / 53,380.90-80,015.70-20,078.02

Finding the Fourth Proportional to 53,380.90, 80,015.70 and 20,078.02

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Solution

The fourth proportional to 53,380.90, 80,015.70 and 20,078.02 is: 30,096.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,380.90 : 80,015.70 = 20,078.02 : x
  2. Step 2: Convert to fraction form
    53,380.90/80,015.70 = 20,078.02/x
  3. Step 3: Cross multiply
    53,380.90x = 80,015.70 × 20,078.02
  4. Step 4: Simplify right side
    53,380.90x = 1,606,556,824.91
  5. Step 5: Solve for x
    x = 1,606,556,824.91/53,380.90
  6. Step 6: Final answer
    x = 30,096.10

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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.