Home / 78,559.96-117,840.18-19,395.64

Finding the Fourth Proportional to 78,559.96, 117,840.18 and 19,395.64

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Solution

The fourth proportional to 78,559.96, 117,840.18 and 19,395.64 is: 29,093.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,559.96 : 117,840.18 = 19,395.64 : x
  2. Step 2: Convert to fraction form
    78,559.96/117,840.18 = 19,395.64/x
  3. Step 3: Cross multiply
    78,559.96x = 117,840.18 × 19,395.64
  4. Step 4: Simplify right side
    78,559.96x = 2,285,585,119.61
  5. Step 5: Solve for x
    x = 2,285,585,119.61/78,559.96
  6. Step 6: Final answer
    x = 29,093.51

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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.