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Finding the Fourth Proportional to 53,329.88, 79,980.24 and 20,047.39

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Solution

The fourth proportional to 53,329.88, 79,980.24 and 20,047.39 is: 30,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,329.88 : 79,980.24 = 20,047.39 : x
  2. Step 2: Convert to fraction form
    53,329.88/79,980.24 = 20,047.39/x
  3. Step 3: Cross multiply
    53,329.88x = 79,980.24 × 20,047.39
  4. Step 4: Simplify right side
    53,329.88x = 1,603,395,063.57
  5. Step 5: Solve for x
    x = 1,603,395,063.57/53,329.88
  6. Step 6: Final answer
    x = 30,065.60

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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.