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Finding the Fourth Proportional to 53,073.63, 79,623.81 and 19,794.78

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Solution

The fourth proportional to 53,073.63, 79,623.81 and 19,794.78 is: 29,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,073.63 : 79,623.81 = 19,794.78 : x
  2. Step 2: Convert to fraction form
    53,073.63/79,623.81 = 19,794.78/x
  3. Step 3: Cross multiply
    53,073.63x = 79,623.81 × 19,794.78
  4. Step 4: Simplify right side
    53,073.63x = 1,576,135,801.71
  5. Step 5: Solve for x
    x = 1,576,135,801.71/53,073.63
  6. Step 6: Final answer
    x = 29,697.15

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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.