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Finding the Fourth Proportional to 79,794,401.60, 119,691,602.40 and 45,687,699.20

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Solution

The fourth proportional to 79,794,401.60, 119,691,602.40 and 45,687,699.20 is: 68,531,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,794,401.60 : 119,691,602.40 = 45,687,699.20 : x
  2. Step 2: Convert to fraction form
    79,794,401.60/119,691,602.40 = 45,687,699.20/x
  3. Step 3: Cross multiply
    79,794,401.60x = 119,691,602.40 × 45,687,699.20
  4. Step 4: Simplify right side
    79,794,401.60x = 5,468,433,927,217,199
  5. Step 5: Solve for x
    x = 5,468,433,927,217,199/79,794,401.60
  6. Step 6: Final answer
    x = 68,531,548.80

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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.