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Finding the Fourth Proportional to 45,065.80, 67,599.60 and 13,901

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Solution

The fourth proportional to 45,065.80, 67,599.60 and 13,901 is: 20,851.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,065.80 : 67,599.60 = 13,901 : x
  2. Step 2: Convert to fraction form
    45,065.80/67,599.60 = 13,901/x
  3. Step 3: Cross multiply
    45,065.80x = 67,599.60 × 13,901
  4. Step 4: Simplify right side
    45,065.80x = 939,702,039.60
  5. Step 5: Solve for x
    x = 939,702,039.60/45,065.80
  6. Step 6: Final answer
    x = 20,851.78

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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.