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Finding the Fourth Proportional to 73,387,076.80, 109,986,136.80 and 56,262,866.80

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Solution

The fourth proportional to 73,387,076.80, 109,986,136.80 and 56,262,866.80 is: 84,321,867.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,387,076.80 : 109,986,136.80 = 56,262,866.80 : x
  2. Step 2: Convert to fraction form
    73,387,076.80/109,986,136.80 = 56,262,866.80/x
  3. Step 3: Cross multiply
    73,387,076.80x = 109,986,136.80 × 56,262,866.80
  4. Step 4: Simplify right side
    73,387,076.80x = 6,188,135,364,624,978
  5. Step 5: Solve for x
    x = 6,188,135,364,624,978/73,387,076.80
  6. Step 6: Final answer
    x = 84,321,867.48

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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.