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Finding the Fourth Proportional to 55,440.80, 76,512.84 and 31,574.96

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Solution

The fourth proportional to 55,440.80, 76,512.84 and 31,574.96 is: 43,576.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,440.80 : 76,512.84 = 31,574.96 : x
  2. Step 2: Convert to fraction form
    55,440.80/76,512.84 = 31,574.96/x
  3. Step 3: Cross multiply
    55,440.80x = 76,512.84 × 31,574.96
  4. Step 4: Simplify right side
    55,440.80x = 2,415,889,862.49
  5. Step 5: Solve for x
    x = 2,415,889,862.49/55,440.80
  6. Step 6: Final answer
    x = 43,576.03

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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.