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Finding the Fourth Proportional to 53,903.80, 80,841.30 and 18,839.80

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Solution

The fourth proportional to 53,903.80, 80,841.30 and 18,839.80 is: 28,254.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,903.80 : 80,841.30 = 18,839.80 : x
  2. Step 2: Convert to fraction form
    53,903.80/80,841.30 = 18,839.80/x
  3. Step 3: Cross multiply
    53,903.80x = 80,841.30 × 18,839.80
  4. Step 4: Simplify right side
    53,903.80x = 1,523,033,923.74
  5. Step 5: Solve for x
    x = 1,523,033,923.74/53,903.80
  6. Step 6: Final answer
    x = 28,254.67

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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.