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Finding the Fourth Proportional to 72,413.94, 99,925.77 and 40,576.68

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Solution

The fourth proportional to 72,413.94, 99,925.77 and 40,576.68 is: 55,992.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,413.94 : 99,925.77 = 40,576.68 : x
  2. Step 2: Convert to fraction form
    72,413.94/99,925.77 = 40,576.68/x
  3. Step 3: Cross multiply
    72,413.94x = 99,925.77 × 40,576.68
  4. Step 4: Simplify right side
    72,413.94x = 4,054,655,993.04
  5. Step 5: Solve for x
    x = 4,054,655,993.04/72,413.94
  6. Step 6: Final answer
    x = 55,992.75

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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.