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Finding the Fourth Proportional to 40,406.40, 60,609.60 and 27,964.80

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Solution

The fourth proportional to 40,406.40, 60,609.60 and 27,964.80 is: 41,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,406.40 : 60,609.60 = 27,964.80 : x
  2. Step 2: Convert to fraction form
    40,406.40/60,609.60 = 27,964.80/x
  3. Step 3: Cross multiply
    40,406.40x = 60,609.60 × 27,964.80
  4. Step 4: Simplify right side
    40,406.40x = 1,694,935,342.08
  5. Step 5: Solve for x
    x = 1,694,935,342.08/40,406.40
  6. Step 6: Final answer
    x = 41,947.20

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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.