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Finding the Fourth Proportional to 55,129.80, 76,047.01 and 40,004.88

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Solution

The fourth proportional to 55,129.80, 76,047.01 and 40,004.88 is: 55,183.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.80 : 76,047.01 = 40,004.88 : x
  2. Step 2: Convert to fraction form
    55,129.80/76,047.01 = 40,004.88/x
  3. Step 3: Cross multiply
    55,129.80x = 76,047.01 × 40,004.88
  4. Step 4: Simplify right side
    55,129.80x = 3,042,251,509.41
  5. Step 5: Solve for x
    x = 3,042,251,509.41/55,129.80
  6. Step 6: Final answer
    x = 55,183.43

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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.