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Finding the Fourth Proportional to 72,413.89, 99,935.12 and 40,593.01

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Solution

The fourth proportional to 72,413.89, 99,935.12 and 40,593.01 is: 56,020.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,413.89 : 99,935.12 = 40,593.01 : x
  2. Step 2: Convert to fraction form
    72,413.89/99,935.12 = 40,593.01/x
  3. Step 3: Cross multiply
    72,413.89x = 99,935.12 × 40,593.01
  4. Step 4: Simplify right side
    72,413.89x = 4,056,667,325.51
  5. Step 5: Solve for x
    x = 4,056,667,325.51/72,413.89
  6. Step 6: Final answer
    x = 56,020.57

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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.