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Finding the Fourth Proportional to 53,606.99, 80,399.55 and 20,315.59

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Solution

The fourth proportional to 53,606.99, 80,399.55 and 20,315.59 is: 30,469.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,606.99 : 80,399.55 = 20,315.59 : x
  2. Step 2: Convert to fraction form
    53,606.99/80,399.55 = 20,315.59/x
  3. Step 3: Cross multiply
    53,606.99x = 80,399.55 × 20,315.59
  4. Step 4: Simplify right side
    53,606.99x = 1,633,364,293.98
  5. Step 5: Solve for x
    x = 1,633,364,293.98/53,606.99
  6. Step 6: Final answer
    x = 30,469.24

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1.5x scale

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.