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Finding the Fourth Proportional to 48,720.80, 73,100.40 and 19,133.60

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Solution

The fourth proportional to 48,720.80, 73,100.40 and 19,133.60 is: 28,707.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,720.80 : 73,100.40 = 19,133.60 : x
  2. Step 2: Convert to fraction form
    48,720.80/73,100.40 = 19,133.60/x
  3. Step 3: Cross multiply
    48,720.80x = 73,100.40 × 19,133.60
  4. Step 4: Simplify right side
    48,720.80x = 1,398,673,813.44
  5. Step 5: Solve for x
    x = 1,398,673,813.44/48,720.80
  6. Step 6: Final answer
    x = 28,707.94

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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.