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Finding the Fourth Proportional to 53,280.40, 79,891.80 and 22,118.80

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Solution

The fourth proportional to 53,280.40, 79,891.80 and 22,118.80 is: 33,166.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,280.40 : 79,891.80 = 22,118.80 : x
  2. Step 2: Convert to fraction form
    53,280.40/79,891.80 = 22,118.80/x
  3. Step 3: Cross multiply
    53,280.40x = 79,891.80 × 22,118.80
  4. Step 4: Simplify right side
    53,280.40x = 1,767,110,745.84
  5. Step 5: Solve for x
    x = 1,767,110,745.84/53,280.40
  6. Step 6: Final answer
    x = 33,166.24

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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.