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Finding the Fourth Proportional to 73,119, 109,679.10 and 17,715

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Solution

The fourth proportional to 73,119, 109,679.10 and 17,715 is: 26,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,119 : 109,679.10 = 17,715 : x
  2. Step 2: Convert to fraction form
    73,119/109,679.10 = 17,715/x
  3. Step 3: Cross multiply
    73,119x = 109,679.10 × 17,715
  4. Step 4: Simplify right side
    73,119x = 1,942,965,256.50
  5. Step 5: Solve for x
    x = 1,942,965,256.50/73,119
  6. Step 6: Final answer
    x = 26,572.65

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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.