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Finding the Fourth Proportional to 50,090,978.79, 75,135,398.49 and 13,699,369.26

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Solution

The fourth proportional to 50,090,978.79, 75,135,398.49 and 13,699,369.26 is: 20,548,761.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,090,978.79 : 75,135,398.49 = 13,699,369.26 : x
  2. Step 2: Convert to fraction form
    50,090,978.79/75,135,398.49 = 13,699,369.26/x
  3. Step 3: Cross multiply
    50,090,978.79x = 75,135,398.49 × 13,699,369.26
  4. Step 4: Simplify right side
    50,090,978.79x = 1,029,307,568,411,756.38
  5. Step 5: Solve for x
    x = 1,029,307,568,411,756.38/50,090,978.79
  6. Step 6: Final answer
    x = 20,548,761.34

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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.