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Finding the Fourth Proportional to 55,393.88, 76,450.80 and 31,515.92

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Solution

The fourth proportional to 55,393.88, 76,450.80 and 31,515.92 is: 43,496.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,393.88 : 76,450.80 = 31,515.92 : x
  2. Step 2: Convert to fraction form
    55,393.88/76,450.80 = 31,515.92/x
  3. Step 3: Cross multiply
    55,393.88x = 76,450.80 × 31,515.92
  4. Step 4: Simplify right side
    55,393.88x = 2,409,417,296.74
  5. Step 5: Solve for x
    x = 2,409,417,296.74/55,393.88
  6. Step 6: Final answer
    x = 43,496.09

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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.