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Finding the Fourth Proportional to 38,803.60, 58,140.60 and 33,230.80

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Solution

The fourth proportional to 38,803.60, 58,140.60 and 33,230.80 is: 49,790.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,803.60 : 58,140.60 = 33,230.80 : x
  2. Step 2: Convert to fraction form
    38,803.60/58,140.60 = 33,230.80/x
  3. Step 3: Cross multiply
    38,803.60x = 58,140.60 × 33,230.80
  4. Step 4: Simplify right side
    38,803.60x = 1,932,058,650.48
  5. Step 5: Solve for x
    x = 1,932,058,650.48/38,803.60
  6. Step 6: Final answer
    x = 49,790.71

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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.