Home / 78,941.72-118,431.20-25,633.53

Finding the Fourth Proportional to 78,941.72, 118,431.20 and 25,633.53

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Solution

The fourth proportional to 78,941.72, 118,431.20 and 25,633.53 is: 38,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,941.72 : 118,431.20 = 25,633.53 : x
  2. Step 2: Convert to fraction form
    78,941.72/118,431.20 = 25,633.53/x
  3. Step 3: Cross multiply
    78,941.72x = 118,431.20 × 25,633.53
  4. Step 4: Simplify right side
    78,941.72x = 3,035,809,782.22
  5. Step 5: Solve for x
    x = 3,035,809,782.22/78,941.72
  6. Step 6: Final answer
    x = 38,456.34

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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.