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Finding the Fourth Proportional to 75,143.80, 103,698.44 and 41,609.80

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Solution

The fourth proportional to 75,143.80, 103,698.44 and 41,609.80 is: 57,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,143.80 : 103,698.44 = 41,609.80 : x
  2. Step 2: Convert to fraction form
    75,143.80/103,698.44 = 41,609.80/x
  3. Step 3: Cross multiply
    75,143.80x = 103,698.44 × 41,609.80
  4. Step 4: Simplify right side
    75,143.80x = 4,314,871,348.71
  5. Step 5: Solve for x
    x = 4,314,871,348.71/75,143.80
  6. Step 6: Final answer
    x = 57,421.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.