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Finding the Fourth Proportional to 72,988.99, 109,489.25 and 23,072.89

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Solution

The fourth proportional to 72,988.99, 109,489.25 and 23,072.89 is: 34,611.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,988.99 : 109,489.25 = 23,072.89 : x
  2. Step 2: Convert to fraction form
    72,988.99/109,489.25 = 23,072.89/x
  3. Step 3: Cross multiply
    72,988.99x = 109,489.25 × 23,072.89
  4. Step 4: Simplify right side
    72,988.99x = 2,526,233,421.43
  5. Step 5: Solve for x
    x = 2,526,233,421.43/72,988.99
  6. Step 6: Final answer
    x = 34,611.16

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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.