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Finding the Fourth Proportional to 53,163.70, 79,672.65 and 43,322.20

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Solution

The fourth proportional to 53,163.70, 79,672.65 and 43,322.20 is: 64,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,163.70 : 79,672.65 = 43,322.20 : x
  2. Step 2: Convert to fraction form
    53,163.70/79,672.65 = 43,322.20/x
  3. Step 3: Cross multiply
    53,163.70x = 79,672.65 × 43,322.20
  4. Step 4: Simplify right side
    53,163.70x = 3,451,594,477.83
  5. Step 5: Solve for x
    x = 3,451,594,477.83/53,163.70
  6. Step 6: Final answer
    x = 64,923.90

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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.