Home / 78,942.88-118,370.40-26,323.66

Finding the Fourth Proportional to 78,942.88, 118,370.40 and 26,323.66

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Solution

The fourth proportional to 78,942.88, 118,370.40 and 26,323.66 is: 39,470.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,942.88 : 118,370.40 = 26,323.66 : x
  2. Step 2: Convert to fraction form
    78,942.88/118,370.40 = 26,323.66/x
  3. Step 3: Cross multiply
    78,942.88x = 118,370.40 × 26,323.66
  4. Step 4: Simplify right side
    78,942.88x = 3,115,942,163.66
  5. Step 5: Solve for x
    x = 3,115,942,163.66/78,942.88
  6. Step 6: Final answer
    x = 39,470.84

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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.