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Finding the Fourth Proportional to 76,788,469.80, 115,182,704.70 and 74,662,705.80

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Solution

The fourth proportional to 76,788,469.80, 115,182,704.70 and 74,662,705.80 is: 111,994,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,788,469.80 : 115,182,704.70 = 74,662,705.80 : x
  2. Step 2: Convert to fraction form
    76,788,469.80/115,182,704.70 = 74,662,705.80/x
  3. Step 3: Cross multiply
    76,788,469.80x = 115,182,704.70 × 74,662,705.80
  4. Step 4: Simplify right side
    76,788,469.80x = 8,599,852,394,264,377
  5. Step 5: Solve for x
    x = 8,599,852,394,264,377/76,788,469.80
  6. Step 6: Final answer
    x = 111,994,058.70

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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.