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Finding the Fourth Proportional to 71,511.80, 107,235.30 and 27,123.80

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Solution

The fourth proportional to 71,511.80, 107,235.30 and 27,123.80 is: 40,673.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511.80 : 107,235.30 = 27,123.80 : x
  2. Step 2: Convert to fraction form
    71,511.80/107,235.30 = 27,123.80/x
  3. Step 3: Cross multiply
    71,511.80x = 107,235.30 × 27,123.80
  4. Step 4: Simplify right side
    71,511.80x = 2,908,628,830.14
  5. Step 5: Solve for x
    x = 2,908,628,830.14/71,511.80
  6. Step 6: Final answer
    x = 40,673.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.