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Finding the Fourth Proportional to 73,143.48, 109,715.22 and 17,739

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Solution

The fourth proportional to 73,143.48, 109,715.22 and 17,739 is: 26,608.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,143.48 : 109,715.22 = 17,739 : x
  2. Step 2: Convert to fraction form
    73,143.48/109,715.22 = 17,739/x
  3. Step 3: Cross multiply
    73,143.48x = 109,715.22 × 17,739
  4. Step 4: Simplify right side
    73,143.48x = 1,946,238,287.58
  5. Step 5: Solve for x
    x = 1,946,238,287.58/73,143.48
  6. Step 6: Final answer
    x = 26,608.50

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1.5x scale

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.