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Finding the Fourth Proportional to 81,996.50, 123,030.50 and 28,726.70

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Solution

The fourth proportional to 81,996.50, 123,030.50 and 28,726.70 is: 43,102.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,996.50 : 123,030.50 = 28,726.70 : x
  2. Step 2: Convert to fraction form
    81,996.50/123,030.50 = 28,726.70/x
  3. Step 3: Cross multiply
    81,996.50x = 123,030.50 × 28,726.70
  4. Step 4: Simplify right side
    81,996.50x = 3,534,260,264.35
  5. Step 5: Solve for x
    x = 3,534,260,264.35/81,996.50
  6. Step 6: Final answer
    x = 43,102.57

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