Home / 78,166,450.70-117,250,673.86-20,658,225

Finding the Fourth Proportional to 78,166,450.70, 117,250,673.86 and 20,658,225

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Solution

The fourth proportional to 78,166,450.70, 117,250,673.86 and 20,658,225 is: 30,987,601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,450.70 : 117,250,673.86 = 20,658,225 : x
  2. Step 2: Convert to fraction form
    78,166,450.70/117,250,673.86 = 20,658,225/x
  3. Step 3: Cross multiply
    78,166,450.70x = 117,250,673.86 × 20,658,225
  4. Step 4: Simplify right side
    78,166,450.70x = 2,422,190,802,027,321
  5. Step 5: Solve for x
    x = 2,422,190,802,027,321/78,166,450.70
  6. Step 6: Final answer
    x = 30,987,601.21

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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.