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Finding the Fourth Proportional to 56,364.71, 84,548.61 and 16,921.82

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Solution

The fourth proportional to 56,364.71, 84,548.61 and 16,921.82 is: 25,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,364.71 : 84,548.61 = 16,921.82 : x
  2. Step 2: Convert to fraction form
    56,364.71/84,548.61 = 16,921.82/x
  3. Step 3: Cross multiply
    56,364.71x = 84,548.61 × 16,921.82
  4. Step 4: Simplify right side
    56,364.71x = 1,430,716,571.04
  5. Step 5: Solve for x
    x = 1,430,716,571.04/56,364.71
  6. Step 6: Final answer
    x = 25,383.20

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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.