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Finding the Fourth Proportional to 55,795.20, 83,692.80 and 18,859.20

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Solution

The fourth proportional to 55,795.20, 83,692.80 and 18,859.20 is: 28,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,795.20 : 83,692.80 = 18,859.20 : x
  2. Step 2: Convert to fraction form
    55,795.20/83,692.80 = 18,859.20/x
  3. Step 3: Cross multiply
    55,795.20x = 83,692.80 × 18,859.20
  4. Step 4: Simplify right side
    55,795.20x = 1,578,379,253.76
  5. Step 5: Solve for x
    x = 1,578,379,253.76/55,795.20
  6. Step 6: Final answer
    x = 28,288.80

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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.