Home / 42,320.75-63,481.82-20,129.63

Finding the Fourth Proportional to 42,320.75, 63,481.82 and 20,129.63

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Solution

The fourth proportional to 42,320.75, 63,481.82 and 20,129.63 is: 30,194.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,320.75 : 63,481.82 = 20,129.63 : x
  2. Step 2: Convert to fraction form
    42,320.75/63,481.82 = 20,129.63/x
  3. Step 3: Cross multiply
    42,320.75x = 63,481.82 × 20,129.63
  4. Step 4: Simplify right side
    42,320.75x = 1,277,865,130.27
  5. Step 5: Solve for x
    x = 1,277,865,130.27/42,320.75
  6. Step 6: Final answer
    x = 30,194.77

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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.