Home / 78,744.96-118,141.27-28,137.35

Finding the Fourth Proportional to 78,744.96, 118,141.27 and 28,137.35

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Solution

The fourth proportional to 78,744.96, 118,141.27 and 28,137.35 is: 42,214.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.96 : 118,141.27 = 28,137.35 : x
  2. Step 2: Convert to fraction form
    78,744.96/118,141.27 = 28,137.35/x
  3. Step 3: Cross multiply
    78,744.96x = 118,141.27 × 28,137.35
  4. Step 4: Simplify right side
    78,744.96x = 3,324,182,488.44
  5. Step 5: Solve for x
    x = 3,324,182,488.44/78,744.96
  6. Step 6: Final answer
    x = 42,214.54

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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.