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Finding the Fourth Proportional to 79,794,455.60, 119,691,683.40 and 45,687,753.20

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Solution

The fourth proportional to 79,794,455.60, 119,691,683.40 and 45,687,753.20 is: 68,531,629.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,794,455.60 : 119,691,683.40 = 45,687,753.20 : x
  2. Step 2: Convert to fraction form
    79,794,455.60/119,691,683.40 = 45,687,753.20/x
  3. Step 3: Cross multiply
    79,794,455.60x = 119,691,683.40 × 45,687,753.20
  4. Step 4: Simplify right side
    79,794,455.60x = 5,468,444,091,271,738
  5. Step 5: Solve for x
    x = 5,468,444,091,271,738/79,794,455.60
  6. Step 6: Final answer
    x = 68,531,629.80

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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.