Home / 39,876.20-55,035.23-30,300.48

Finding the Fourth Proportional to 39,876.20, 55,035.23 and 30,300.48

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Solution

The fourth proportional to 39,876.20, 55,035.23 and 30,300.48 is: 41,819.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,876.20 : 55,035.23 = 30,300.48 : x
  2. Step 2: Convert to fraction form
    39,876.20/55,035.23 = 30,300.48/x
  3. Step 3: Cross multiply
    39,876.20x = 55,035.23 × 30,300.48
  4. Step 4: Simplify right side
    39,876.20x = 1,667,593,734.41
  5. Step 5: Solve for x
    x = 1,667,593,734.41/39,876.20
  6. Step 6: Final answer
    x = 41,819.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.