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Finding the Fourth Proportional to 51,589.88, 71,208.76 and 30,381.44

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Solution

The fourth proportional to 51,589.88, 71,208.76 and 30,381.44 is: 41,935.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,589.88 : 71,208.76 = 30,381.44 : x
  2. Step 2: Convert to fraction form
    51,589.88/71,208.76 = 30,381.44/x
  3. Step 3: Cross multiply
    51,589.88x = 71,208.76 × 30,381.44
  4. Step 4: Simplify right side
    51,589.88x = 2,163,424,669.41
  5. Step 5: Solve for x
    x = 2,163,424,669.41/51,589.88
  6. Step 6: Final answer
    x = 41,935.06

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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.