Home / 51,687.18-71,336.12-31,555.80

Finding the Fourth Proportional to 51,687.18, 71,336.12 and 31,555.80

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Solution

The fourth proportional to 51,687.18, 71,336.12 and 31,555.80 is: 43,551.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,687.18 : 71,336.12 = 31,555.80 : x
  2. Step 2: Convert to fraction form
    51,687.18/71,336.12 = 31,555.80/x
  3. Step 3: Cross multiply
    51,687.18x = 71,336.12 × 31,555.80
  4. Step 4: Simplify right side
    51,687.18x = 2,251,068,177.72
  5. Step 5: Solve for x
    x = 2,251,068,177.72/51,687.18
  6. Step 6: Final answer
    x = 43,551.77

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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.