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Finding the Fourth Proportional to 53,299.20, 79,927.20 and 18,220.80

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Solution

The fourth proportional to 53,299.20, 79,927.20 and 18,220.80 is: 27,323.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,299.20 : 79,927.20 = 18,220.80 : x
  2. Step 2: Convert to fraction form
    53,299.20/79,927.20 = 18,220.80/x
  3. Step 3: Cross multiply
    53,299.20x = 79,927.20 × 18,220.80
  4. Step 4: Simplify right side
    53,299.20x = 1,456,337,525.76
  5. Step 5: Solve for x
    x = 1,456,337,525.76/53,299.20
  6. Step 6: Final answer
    x = 27,323.82

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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.