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Finding the Fourth Proportional to 75,103.84, 103,656 and 43,291.23

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Solution

The fourth proportional to 75,103.84, 103,656 and 43,291.23 is: 59,749.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,103.84 : 103,656 = 43,291.23 : x
  2. Step 2: Convert to fraction form
    75,103.84/103,656 = 43,291.23/x
  3. Step 3: Cross multiply
    75,103.84x = 103,656 × 43,291.23
  4. Step 4: Simplify right side
    75,103.84x = 4,487,395,736.88
  5. Step 5: Solve for x
    x = 4,487,395,736.88/75,103.84
  6. Step 6: Final answer
    x = 59,749.22

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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.