Home / 43,139.01-64,620.92-21,778.54

Finding the Fourth Proportional to 43,139.01, 64,620.92 and 21,778.54

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Solution

The fourth proportional to 43,139.01, 64,620.92 and 21,778.54 is: 32,623.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.01 : 64,620.92 = 21,778.54 : x
  2. Step 2: Convert to fraction form
    43,139.01/64,620.92 = 21,778.54/x
  3. Step 3: Cross multiply
    43,139.01x = 64,620.92 × 21,778.54
  4. Step 4: Simplify right side
    43,139.01x = 1,407,349,291.06
  5. Step 5: Solve for x
    x = 1,407,349,291.06/43,139.01
  6. Step 6: Final answer
    x = 32,623.59

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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.