Home / 72,003,943.41-99,365,703.66-38,964,189.21

Finding the Fourth Proportional to 72,003,943.41, 99,365,703.66 and 38,964,189.21

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Solution

The fourth proportional to 72,003,943.41, 99,365,703.66 and 38,964,189.21 is: 53,770,722.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003,943.41 : 99,365,703.66 = 38,964,189.21 : x
  2. Step 2: Convert to fraction form
    72,003,943.41/99,365,703.66 = 38,964,189.21/x
  3. Step 3: Cross multiply
    72,003,943.41x = 99,365,703.66 × 38,964,189.21
  4. Step 4: Simplify right side
    72,003,943.41x = 3,871,704,078,393,029.50
  5. Step 5: Solve for x
    x = 3,871,704,078,393,029.50/72,003,943.41
  6. Step 6: Final answer
    x = 53,770,722.76

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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.