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Finding the Fourth Proportional to 54,600.64, 81,852.24 and 21,313

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Solution

The fourth proportional to 54,600.64, 81,852.24 and 21,313 is: 31,950.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,600.64 : 81,852.24 = 21,313 : x
  2. Step 2: Convert to fraction form
    54,600.64/81,852.24 = 21,313/x
  3. Step 3: Cross multiply
    54,600.64x = 81,852.24 × 21,313
  4. Step 4: Simplify right side
    54,600.64x = 1,744,516,791.12
  5. Step 5: Solve for x
    x = 1,744,516,791.12/54,600.64
  6. Step 6: Final answer
    x = 31,950.48

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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.