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Finding the Fourth Proportional to 71,036.60, 106,536.40 and 21,104.96

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Solution

The fourth proportional to 71,036.60, 106,536.40 and 21,104.96 is: 31,651.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,036.60 : 106,536.40 = 21,104.96 : x
  2. Step 2: Convert to fraction form
    71,036.60/106,536.40 = 21,104.96/x
  3. Step 3: Cross multiply
    71,036.60x = 106,536.40 × 21,104.96
  4. Step 4: Simplify right side
    71,036.60x = 2,248,446,460.54
  5. Step 5: Solve for x
    x = 2,248,446,460.54/71,036.60
  6. Step 6: Final answer
    x = 31,651.94

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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.