Home / 78,166,450.23-117,250,673.16-20,658,224.53

Finding the Fourth Proportional to 78,166,450.23, 117,250,673.16 and 20,658,224.53

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Solution

The fourth proportional to 78,166,450.23, 117,250,673.16 and 20,658,224.53 is: 30,987,600.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,450.23 : 117,250,673.16 = 20,658,224.53 : x
  2. Step 2: Convert to fraction form
    78,166,450.23/117,250,673.16 = 20,658,224.53/x
  3. Step 3: Cross multiply
    78,166,450.23x = 117,250,673.16 × 20,658,224.53
  4. Step 4: Simplify right side
    78,166,450.23x = 2,422,190,732,579,488
  5. Step 5: Solve for x
    x = 2,422,190,732,579,488/78,166,450.23
  6. Step 6: Final answer
    x = 30,987,600.51

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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.