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Finding the Fourth Proportional to 79,728.48, 119,620.80 and 44,697.60

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Solution

The fourth proportional to 79,728.48, 119,620.80 and 44,697.60 is: 67,062.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,728.48 : 119,620.80 = 44,697.60 : x
  2. Step 2: Convert to fraction form
    79,728.48/119,620.80 = 44,697.60/x
  3. Step 3: Cross multiply
    79,728.48x = 119,620.80 × 44,697.60
  4. Step 4: Simplify right side
    79,728.48x = 5,346,762,670.08
  5. Step 5: Solve for x
    x = 5,346,762,670.08/79,728.48
  6. Step 6: Final answer
    x = 67,062.14

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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.