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Finding the Fourth Proportional to 48,139.20, 72,208.80 and 33,364.80

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Solution

The fourth proportional to 48,139.20, 72,208.80 and 33,364.80 is: 50,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,139.20 : 72,208.80 = 33,364.80 : x
  2. Step 2: Convert to fraction form
    48,139.20/72,208.80 = 33,364.80/x
  3. Step 3: Cross multiply
    48,139.20x = 72,208.80 × 33,364.80
  4. Step 4: Simplify right side
    48,139.20x = 2,409,232,170.24
  5. Step 5: Solve for x
    x = 2,409,232,170.24/48,139.20
  6. Step 6: Final answer
    x = 50,047.20

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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.