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Finding the Fourth Proportional to 45,339.60, 68,041.80 and 19,063.20

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Solution

The fourth proportional to 45,339.60, 68,041.80 and 19,063.20 is: 28,608.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,339.60 : 68,041.80 = 19,063.20 : x
  2. Step 2: Convert to fraction form
    45,339.60/68,041.80 = 19,063.20/x
  3. Step 3: Cross multiply
    45,339.60x = 68,041.80 × 19,063.20
  4. Step 4: Simplify right side
    45,339.60x = 1,297,094,441.76
  5. Step 5: Solve for x
    x = 1,297,094,441.76/45,339.60
  6. Step 6: Final answer
    x = 28,608.42

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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.