Home / 72,259,083.11-99,719,021.37-40,897,129.79

Finding the Fourth Proportional to 72,259,083.11, 99,719,021.37 and 40,897,129.79

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Solution

The fourth proportional to 72,259,083.11, 99,719,021.37 and 40,897,129.79 is: 56,438,880.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,259,083.11 : 99,719,021.37 = 40,897,129.79 : x
  2. Step 2: Convert to fraction form
    72,259,083.11/99,719,021.37 = 40,897,129.79/x
  3. Step 3: Cross multiply
    72,259,083.11x = 99,719,021.37 × 40,897,129.79
  4. Step 4: Simplify right side
    72,259,083.11x = 4,078,221,759,002,078.50
  5. Step 5: Solve for x
    x = 4,078,221,759,002,078.50/72,259,083.11
  6. Step 6: Final answer
    x = 56,438,880.54

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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.