Home / 72,765.09-100,415.66-40,933.98

Finding the Fourth Proportional to 72,765.09, 100,415.66 and 40,933.98

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Solution

The fourth proportional to 72,765.09, 100,415.66 and 40,933.98 is: 56,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,765.09 : 100,415.66 = 40,933.98 : x
  2. Step 2: Convert to fraction form
    72,765.09/100,415.66 = 40,933.98/x
  3. Step 3: Cross multiply
    72,765.09x = 100,415.66 × 40,933.98
  4. Step 4: Simplify right side
    72,765.09x = 4,110,412,413.46
  5. Step 5: Solve for x
    x = 4,110,412,413.46/72,765.09
  6. Step 6: Final answer
    x = 56,488.80

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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.