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Finding the Fourth Proportional to 73,679.63, 101,678.69 and 40,145.63

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Solution

The fourth proportional to 73,679.63, 101,678.69 and 40,145.63 is: 55,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,679.63 : 101,678.69 = 40,145.63 : x
  2. Step 2: Convert to fraction form
    73,679.63/101,678.69 = 40,145.63/x
  3. Step 3: Cross multiply
    73,679.63x = 101,678.69 × 40,145.63
  4. Step 4: Simplify right side
    73,679.63x = 4,081,954,659.60
  5. Step 5: Solve for x
    x = 4,081,954,659.60/73,679.63
  6. Step 6: Final answer
    x = 55,401.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.