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Finding the Fourth Proportional to 75,108, 112,700.88 and 38,172

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Solution

The fourth proportional to 75,108, 112,700.88 and 38,172 is: 57,277.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,108 : 112,700.88 = 38,172 : x
  2. Step 2: Convert to fraction form
    75,108/112,700.88 = 38,172/x
  3. Step 3: Cross multiply
    75,108x = 112,700.88 × 38,172
  4. Step 4: Simplify right side
    75,108x = 4,302,017,991.36
  5. Step 5: Solve for x
    x = 4,302,017,991.36/75,108
  6. Step 6: Final answer
    x = 57,277.76

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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.