Home / 72,739,223.67-100,379,343.05-39,699,204.54

Finding the Fourth Proportional to 72,739,223.67, 100,379,343.05 and 39,699,204.54

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Solution

The fourth proportional to 72,739,223.67, 100,379,343.05 and 39,699,204.54 is: 54,784,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,739,223.67 : 100,379,343.05 = 39,699,204.54 : x
  2. Step 2: Convert to fraction form
    72,739,223.67/100,379,343.05 = 39,699,204.54/x
  3. Step 3: Cross multiply
    72,739,223.67x = 100,379,343.05 × 39,699,204.54
  4. Step 4: Simplify right side
    72,739,223.67x = 3,984,980,070,906,731
  5. Step 5: Solve for x
    x = 3,984,980,070,906,731/72,739,223.67
  6. Step 6: Final answer
    x = 54,784,473.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.