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Finding the Fourth Proportional to 51,992.00, 77,979.42 and 18,705.86

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Solution

The fourth proportional to 51,992.00, 77,979.42 and 18,705.86 is: 28,055.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,992.00 : 77,979.42 = 18,705.86 : x
  2. Step 2: Convert to fraction form
    51,992.00/77,979.42 = 18,705.86/x
  3. Step 3: Cross multiply
    51,992.00x = 77,979.42 × 18,705.86
  4. Step 4: Simplify right side
    51,992.00x = 1,458,671,723.50
  5. Step 5: Solve for x
    x = 1,458,671,723.50/51,992.00
  6. Step 6: Final answer
    x = 28,055.70

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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.