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Finding the Fourth Proportional to 36,655.60, 55,015.80 and 31,406.80

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Solution

The fourth proportional to 36,655.60, 55,015.80 and 31,406.80 is: 47,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,655.60 : 55,015.80 = 31,406.80 : x
  2. Step 2: Convert to fraction form
    36,655.60/55,015.80 = 31,406.80/x
  3. Step 3: Cross multiply
    36,655.60x = 55,015.80 × 31,406.80
  4. Step 4: Simplify right side
    36,655.60x = 1,727,870,227.44
  5. Step 5: Solve for x
    x = 1,727,870,227.44/36,655.60
  6. Step 6: Final answer
    x = 47,137.96

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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.