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Finding the Fourth Proportional to 61,674.56, 85,021.90 and 40,416.92

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Solution

The fourth proportional to 61,674.56, 85,021.90 and 40,416.92 is: 55,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,674.56 : 85,021.90 = 40,416.92 : x
  2. Step 2: Convert to fraction form
    61,674.56/85,021.90 = 40,416.92/x
  3. Step 3: Cross multiply
    61,674.56x = 85,021.90 × 40,416.92
  4. Step 4: Simplify right side
    61,674.56x = 3,436,323,330.55
  5. Step 5: Solve for x
    x = 3,436,323,330.55/61,674.56
  6. Step 6: Final answer
    x = 55,717.03

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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.