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Finding the Fourth Proportional to 79,241.74, 118,869.93 and 28,653.39

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Solution

The fourth proportional to 79,241.74, 118,869.93 and 28,653.39 is: 42,982.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,241.74 : 118,869.93 = 28,653.39 : x
  2. Step 2: Convert to fraction form
    79,241.74/118,869.93 = 28,653.39/x
  3. Step 3: Cross multiply
    79,241.74x = 118,869.93 × 28,653.39
  4. Step 4: Simplify right side
    79,241.74x = 3,406,026,463.56
  5. Step 5: Solve for x
    x = 3,406,026,463.56/79,241.74
  6. Step 6: Final answer
    x = 42,982.73

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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.