Home / 53,974.20-80,922.90-20,681.40

Finding the Fourth Proportional to 53,974.20, 80,922.90 and 20,681.40

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Solution

The fourth proportional to 53,974.20, 80,922.90 and 20,681.40 is: 31,007.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,974.20 : 80,922.90 = 20,681.40 : x
  2. Step 2: Convert to fraction form
    53,974.20/80,922.90 = 20,681.40/x
  3. Step 3: Cross multiply
    53,974.20x = 80,922.90 × 20,681.40
  4. Step 4: Simplify right side
    53,974.20x = 1,673,598,864.06
  5. Step 5: Solve for x
    x = 1,673,598,864.06/53,974.20
  6. Step 6: Final answer
    x = 31,007.39

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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.