Home / 78,986.76-118,486.26-26,396.43

Finding the Fourth Proportional to 78,986.76, 118,486.26 and 26,396.43

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Solution

The fourth proportional to 78,986.76, 118,486.26 and 26,396.43 is: 39,596.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986.76 : 118,486.26 = 26,396.43 : x
  2. Step 2: Convert to fraction form
    78,986.76/118,486.26 = 26,396.43/x
  3. Step 3: Cross multiply
    78,986.76x = 118,486.26 × 26,396.43
  4. Step 4: Simplify right side
    78,986.76x = 3,127,614,268.05
  5. Step 5: Solve for x
    x = 3,127,614,268.05/78,986.76
  6. Step 6: Final answer
    x = 39,596.69

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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.