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Finding the Fourth Proportional to 71,302.36, 106,900.53 and 43,215.52

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Solution

The fourth proportional to 71,302.36, 106,900.53 and 43,215.52 is: 64,791.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,302.36 : 106,900.53 = 43,215.52 : x
  2. Step 2: Convert to fraction form
    71,302.36/106,900.53 = 43,215.52/x
  3. Step 3: Cross multiply
    71,302.36x = 106,900.53 × 43,215.52
  4. Step 4: Simplify right side
    71,302.36x = 4,619,761,992.23
  5. Step 5: Solve for x
    x = 4,619,761,992.23/71,302.36
  6. Step 6: Final answer
    x = 64,791.15

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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.