Home / 78,508,860.80-117,763,291.20-73,470,012.80

Finding the Fourth Proportional to 78,508,860.80, 117,763,291.20 and 73,470,012.80

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Solution

The fourth proportional to 78,508,860.80, 117,763,291.20 and 73,470,012.80 is: 110,205,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,508,860.80 : 117,763,291.20 = 73,470,012.80 : x
  2. Step 2: Convert to fraction form
    78,508,860.80/117,763,291.20 = 73,470,012.80/x
  3. Step 3: Cross multiply
    78,508,860.80x = 117,763,291.20 × 73,470,012.80
  4. Step 4: Simplify right side
    78,508,860.80x = 8,652,070,511,834,127
  5. Step 5: Solve for x
    x = 8,652,070,511,834,127/78,508,860.80
  6. Step 6: Final answer
    x = 110,205,019.20

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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.