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Finding the Fourth Proportional to 53,243.60, 79,863.64 and 21,644.28

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Solution

The fourth proportional to 53,243.60, 79,863.64 and 21,644.28 is: 32,465.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,243.60 : 79,863.64 = 21,644.28 : x
  2. Step 2: Convert to fraction form
    53,243.60/79,863.64 = 21,644.28/x
  3. Step 3: Cross multiply
    53,243.60x = 79,863.64 × 21,644.28
  4. Step 4: Simplify right side
    53,243.60x = 1,728,590,931.87
  5. Step 5: Solve for x
    x = 1,728,590,931.87/53,243.60
  6. Step 6: Final answer
    x = 32,465.71

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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.