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Finding the Fourth Proportional to 105,603.40, 158,353.26 and 39,040.84

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Solution

The fourth proportional to 105,603.40, 158,353.26 and 39,040.84 is: 58,542.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,603.40 : 158,353.26 = 39,040.84 : x
  2. Step 2: Convert to fraction form
    105,603.40/158,353.26 = 39,040.84/x
  3. Step 3: Cross multiply
    105,603.40x = 158,353.26 × 39,040.84
  4. Step 4: Simplify right side
    105,603.40x = 6,182,244,287.14
  5. Step 5: Solve for x
    x = 6,182,244,287.14/105,603.40
  6. Step 6: Final answer
    x = 58,542.10

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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.