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Finding the Fourth Proportional to 79,647.30, 109,911.20 and 43,349.49

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Solution

The fourth proportional to 79,647.30, 109,911.20 and 43,349.49 is: 59,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,647.30 : 109,911.20 = 43,349.49 : x
  2. Step 2: Convert to fraction form
    79,647.30/109,911.20 = 43,349.49/x
  3. Step 3: Cross multiply
    79,647.30x = 109,911.20 × 43,349.49
  4. Step 4: Simplify right side
    79,647.30x = 4,764,594,248.54
  5. Step 5: Solve for x
    x = 4,764,594,248.54/79,647.30
  6. Step 6: Final answer
    x = 59,821.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.