Home / 78,829.88-118,169.30-26,202.38

Finding the Fourth Proportional to 78,829.88, 118,169.30 and 26,202.38

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Solution

The fourth proportional to 78,829.88, 118,169.30 and 26,202.38 is: 39,278.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,829.88 : 118,169.30 = 26,202.38 : x
  2. Step 2: Convert to fraction form
    78,829.88/118,169.30 = 26,202.38/x
  3. Step 3: Cross multiply
    78,829.88x = 118,169.30 × 26,202.38
  4. Step 4: Simplify right side
    78,829.88x = 3,096,316,902.93
  5. Step 5: Solve for x
    x = 3,096,316,902.93/78,829.88
  6. Step 6: Final answer
    x = 39,278.47

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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.