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Finding the Fourth Proportional to 73,190.80, 109,721.40 and 48,242.80

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Solution

The fourth proportional to 73,190.80, 109,721.40 and 48,242.80 is: 72,321.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,190.80 : 109,721.40 = 48,242.80 : x
  2. Step 2: Convert to fraction form
    73,190.80/109,721.40 = 48,242.80/x
  3. Step 3: Cross multiply
    73,190.80x = 109,721.40 × 48,242.80
  4. Step 4: Simplify right side
    73,190.80x = 5,293,267,555.92
  5. Step 5: Solve for x
    x = 5,293,267,555.92/73,190.80
  6. Step 6: Final answer
    x = 72,321.49

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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.