Home / 51,690.18-71,340.30-31,558.80

Finding the Fourth Proportional to 51,690.18, 71,340.30 and 31,558.80

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Solution

The fourth proportional to 51,690.18, 71,340.30 and 31,558.80 is: 43,555.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,690.18 : 71,340.30 = 31,558.80 : x
  2. Step 2: Convert to fraction form
    51,690.18/71,340.30 = 31,558.80/x
  3. Step 3: Cross multiply
    51,690.18x = 71,340.30 × 31,558.80
  4. Step 4: Simplify right side
    51,690.18x = 2,251,414,259.64
  5. Step 5: Solve for x
    x = 2,251,414,259.64/51,690.18
  6. Step 6: Final answer
    x = 43,555.94

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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.