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Finding the Fourth Proportional to 53,297.40, 79,891.02 and 19,993.98

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Solution

The fourth proportional to 53,297.40, 79,891.02 and 19,993.98 is: 29,970.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,297.40 : 79,891.02 = 19,993.98 : x
  2. Step 2: Convert to fraction form
    53,297.40/79,891.02 = 19,993.98/x
  3. Step 3: Cross multiply
    53,297.40x = 79,891.02 × 19,993.98
  4. Step 4: Simplify right side
    53,297.40x = 1,597,339,456.06
  5. Step 5: Solve for x
    x = 1,597,339,456.06/53,297.40
  6. Step 6: Final answer
    x = 29,970.31

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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.