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Finding the Fourth Proportional to 53,279.40, 79,919.10 and 33,580.20

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Solution

The fourth proportional to 53,279.40, 79,919.10 and 33,580.20 is: 50,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,279.40 : 79,919.10 = 33,580.20 : x
  2. Step 2: Convert to fraction form
    53,279.40/79,919.10 = 33,580.20/x
  3. Step 3: Cross multiply
    53,279.40x = 79,919.10 × 33,580.20
  4. Step 4: Simplify right side
    53,279.40x = 2,683,699,361.82
  5. Step 5: Solve for x
    x = 2,683,699,361.82/53,279.40
  6. Step 6: Final answer
    x = 50,370.30

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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.