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Finding the Fourth Proportional to 79,361.40, 119,040.56 and 19,390.26

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Solution

The fourth proportional to 79,361.40, 119,040.56 and 19,390.26 is: 29,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,361.40 : 119,040.56 = 19,390.26 : x
  2. Step 2: Convert to fraction form
    79,361.40/119,040.56 = 19,390.26/x
  3. Step 3: Cross multiply
    79,361.40x = 119,040.56 × 19,390.26
  4. Step 4: Simplify right side
    79,361.40x = 2,308,227,408.95
  5. Step 5: Solve for x
    x = 2,308,227,408.95/79,361.40
  6. Step 6: Final answer
    x = 29,085.01

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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.