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Finding the Fourth Proportional to 79,374.36, 118,978.74 and 26,765.76

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Solution

The fourth proportional to 79,374.36, 118,978.74 and 26,765.76 is: 40,120.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,374.36 : 118,978.74 = 26,765.76 : x
  2. Step 2: Convert to fraction form
    79,374.36/118,978.74 = 26,765.76/x
  3. Step 3: Cross multiply
    79,374.36x = 118,978.74 × 26,765.76
  4. Step 4: Simplify right side
    79,374.36x = 3,184,556,399.94
  5. Step 5: Solve for x
    x = 3,184,556,399.94/79,374.36
  6. Step 6: Final answer
    x = 40,120.72

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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.