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Finding the Fourth Proportional to 53,003.73, 79,509.48 and 19,723.79

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Solution

The fourth proportional to 53,003.73, 79,509.48 and 19,723.79 is: 29,587.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,003.73 : 79,509.48 = 19,723.79 : x
  2. Step 2: Convert to fraction form
    53,003.73/79,509.48 = 19,723.79/x
  3. Step 3: Cross multiply
    53,003.73x = 79,509.48 × 19,723.79
  4. Step 4: Simplify right side
    53,003.73x = 1,568,227,888.98
  5. Step 5: Solve for x
    x = 1,568,227,888.98/53,003.73
  6. Step 6: Final answer
    x = 29,587.12

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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.