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Finding the Fourth Proportional to 73,678.85, 101,676.80 and 40,144.85

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Solution

The fourth proportional to 73,678.85, 101,676.80 and 40,144.85 is: 55,399.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,678.85 : 101,676.80 = 40,144.85 : x
  2. Step 2: Convert to fraction form
    73,678.85/101,676.80 = 40,144.85/x
  3. Step 3: Cross multiply
    73,678.85x = 101,676.80 × 40,144.85
  4. Step 4: Simplify right side
    73,678.85x = 4,081,799,884.48
  5. Step 5: Solve for x
    x = 4,081,799,884.48/73,678.85
  6. Step 6: Final answer
    x = 55,399.89

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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.