Home / 53,412.72-80,137.59-20,142.33

Finding the Fourth Proportional to 53,412.72, 80,137.59 and 20,142.33

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Solution

The fourth proportional to 53,412.72, 80,137.59 and 20,142.33 is: 30,220.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,412.72 : 80,137.59 = 20,142.33 : x
  2. Step 2: Convert to fraction form
    53,412.72/80,137.59 = 20,142.33/x
  3. Step 3: Cross multiply
    53,412.72x = 80,137.59 × 20,142.33
  4. Step 4: Simplify right side
    53,412.72x = 1,614,157,783.18
  5. Step 5: Solve for x
    x = 1,614,157,783.18/53,412.72
  6. Step 6: Final answer
    x = 30,220.48

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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.