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Finding the Fourth Proportional to 45,419.40, 68,104.80 and 19,094.40

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Solution

The fourth proportional to 45,419.40, 68,104.80 and 19,094.40 is: 28,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,419.40 : 68,104.80 = 19,094.40 : x
  2. Step 2: Convert to fraction form
    45,419.40/68,104.80 = 19,094.40/x
  3. Step 3: Cross multiply
    45,419.40x = 68,104.80 × 19,094.40
  4. Step 4: Simplify right side
    45,419.40x = 1,300,420,293.12
  5. Step 5: Solve for x
    x = 1,300,420,293.12/45,419.40
  6. Step 6: Final answer
    x = 28,631.38

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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.