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Finding the Fourth Proportional to 57,758.76, 79,662.96 and 39,883.68

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Solution

The fourth proportional to 57,758.76, 79,662.96 and 39,883.68 is: 55,009.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,758.76 : 79,662.96 = 39,883.68 : x
  2. Step 2: Convert to fraction form
    57,758.76/79,662.96 = 39,883.68/x
  3. Step 3: Cross multiply
    57,758.76x = 79,662.96 × 39,883.68
  4. Step 4: Simplify right side
    57,758.76x = 3,177,252,004.49
  5. Step 5: Solve for x
    x = 3,177,252,004.49/57,758.76
  6. Step 6: Final answer
    x = 55,009.01

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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.