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Finding the Fourth Proportional to 72,690.72, 109,036.89 and 22,768.80

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Solution

The fourth proportional to 72,690.72, 109,036.89 and 22,768.80 is: 34,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,690.72 : 109,036.89 = 22,768.80 : x
  2. Step 2: Convert to fraction form
    72,690.72/109,036.89 = 22,768.80/x
  3. Step 3: Cross multiply
    72,690.72x = 109,036.89 × 22,768.80
  4. Step 4: Simplify right side
    72,690.72x = 2,482,639,141.03
  5. Step 5: Solve for x
    x = 2,482,639,141.03/72,690.72
  6. Step 6: Final answer
    x = 34,153.45

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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.