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Finding the Fourth Proportional to 79,480.80, 119,048.40 and 48,261.60

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Solution

The fourth proportional to 79,480.80, 119,048.40 and 48,261.60 is: 72,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,480.80 : 119,048.40 = 48,261.60 : x
  2. Step 2: Convert to fraction form
    79,480.80/119,048.40 = 48,261.60/x
  3. Step 3: Cross multiply
    79,480.80x = 119,048.40 × 48,261.60
  4. Step 4: Simplify right side
    79,480.80x = 5,745,466,261.44
  5. Step 5: Solve for x
    x = 5,745,466,261.44/79,480.80
  6. Step 6: Final answer
    x = 72,287.47

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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.