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Finding the Fourth Proportional to 53,865.40, 80,765.70 and 27,621.40

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Solution

The fourth proportional to 53,865.40, 80,765.70 and 27,621.40 is: 41,415.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,865.40 : 80,765.70 = 27,621.40 : x
  2. Step 2: Convert to fraction form
    53,865.40/80,765.70 = 27,621.40/x
  3. Step 3: Cross multiply
    53,865.40x = 80,765.70 × 27,621.40
  4. Step 4: Simplify right side
    53,865.40x = 2,230,861,705.98
  5. Step 5: Solve for x
    x = 2,230,861,705.98/53,865.40
  6. Step 6: Final answer
    x = 41,415.49

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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.