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Finding the Fourth Proportional to 73,140, 109,710 and 17,736

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Solution

The fourth proportional to 73,140, 109,710 and 17,736 is: 26,604

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,140 : 109,710 = 17,736 : x
  2. Step 2: Convert to fraction form
    73,140/109,710 = 17,736/x
  3. Step 3: Cross multiply
    73,140x = 109,710 × 17,736
  4. Step 4: Simplify right side
    73,140x = 1,945,816,560
  5. Step 5: Solve for x
    x = 1,945,816,560/73,140
  6. Step 6: Final answer
    x = 26,604

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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.