Home / 78,028,997.80-117,043,496.70-73,246,028.80

Finding the Fourth Proportional to 78,028,997.80, 117,043,496.70 and 73,246,028.80

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Solution

The fourth proportional to 78,028,997.80, 117,043,496.70 and 73,246,028.80 is: 109,869,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,028,997.80 : 117,043,496.70 = 73,246,028.80 : x
  2. Step 2: Convert to fraction form
    78,028,997.80/117,043,496.70 = 73,246,028.80/x
  3. Step 3: Cross multiply
    78,028,997.80x = 117,043,496.70 × 73,246,028.80
  4. Step 4: Simplify right side
    78,028,997.80x = 8,572,971,330,140,905
  5. Step 5: Solve for x
    x = 8,572,971,330,140,905/78,028,997.80
  6. Step 6: Final answer
    x = 109,869,043.20

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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.