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Finding the Fourth Proportional to 56,381.94, 84,585.73 and 18,939.14

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Solution

The fourth proportional to 56,381.94, 84,585.73 and 18,939.14 is: 28,413.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,381.94 : 84,585.73 = 18,939.14 : x
  2. Step 2: Convert to fraction form
    56,381.94/84,585.73 = 18,939.14/x
  3. Step 3: Cross multiply
    56,381.94x = 84,585.73 × 18,939.14
  4. Step 4: Simplify right side
    56,381.94x = 1,601,980,982.47
  5. Step 5: Solve for x
    x = 1,601,980,982.47/56,381.94
  6. Step 6: Final answer
    x = 28,413.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.