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Finding the Fourth Proportional to 76,791,754.80, 115,250,617.80 and 74,272,330.80

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Solution

The fourth proportional to 76,791,754.80, 115,250,617.80 and 74,272,330.80 is: 111,469,415.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,791,754.80 : 115,250,617.80 = 74,272,330.80 : x
  2. Step 2: Convert to fraction form
    76,791,754.80/115,250,617.80 = 74,272,330.80/x
  3. Step 3: Cross multiply
    76,791,754.80x = 115,250,617.80 × 74,272,330.80
  4. Step 4: Simplify right side
    76,791,754.80x = 8,559,932,010,145,968
  5. Step 5: Solve for x
    x = 8,559,932,010,145,968/76,791,754.80
  6. Step 6: Final answer
    x = 111,469,415.34

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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.