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Finding the Fourth Proportional to 81,727, 122,590.50 and 26,323

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Solution

The fourth proportional to 81,727, 122,590.50 and 26,323 is: 39,484.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,727 : 122,590.50 = 26,323 : x
  2. Step 2: Convert to fraction form
    81,727/122,590.50 = 26,323/x
  3. Step 3: Cross multiply
    81,727x = 122,590.50 × 26,323
  4. Step 4: Simplify right side
    81,727x = 3,226,949,731.50
  5. Step 5: Solve for x
    x = 3,226,949,731.50/81,727
  6. Step 6: Final answer
    x = 39,484.50

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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.