Home / 53,081.54-79,622.31-13,638.65

Finding the Fourth Proportional to 53,081.54, 79,622.31 and 13,638.65

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Solution

The fourth proportional to 53,081.54, 79,622.31 and 13,638.65 is: 20,457.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,081.54 : 79,622.31 = 13,638.65 : x
  2. Step 2: Convert to fraction form
    53,081.54/79,622.31 = 13,638.65/x
  3. Step 3: Cross multiply
    53,081.54x = 79,622.31 × 13,638.65
  4. Step 4: Simplify right side
    53,081.54x = 1,085,940,351.98
  5. Step 5: Solve for x
    x = 1,085,940,351.98/53,081.54
  6. Step 6: Final answer
    x = 20,457.97

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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.