Home / 53,721.21-80,618.84-18,660.87

Finding the Fourth Proportional to 53,721.21, 80,618.84 and 18,660.87

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Solution

The fourth proportional to 53,721.21, 80,618.84 and 18,660.87 is: 28,004.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,721.21 : 80,618.84 = 18,660.87 : x
  2. Step 2: Convert to fraction form
    53,721.21/80,618.84 = 18,660.87/x
  3. Step 3: Cross multiply
    53,721.21x = 80,618.84 × 18,660.87
  4. Step 4: Simplify right side
    53,721.21x = 1,504,417,669.46
  5. Step 5: Solve for x
    x = 1,504,417,669.46/53,721.21
  6. Step 6: Final answer
    x = 28,004.16

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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.