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Finding the Fourth Proportional to 43,215.69, 64,719.03 and 35,765.31

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Solution

The fourth proportional to 43,215.69, 64,719.03 and 35,765.31 is: 53,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,215.69 : 64,719.03 = 35,765.31 : x
  2. Step 2: Convert to fraction form
    43,215.69/64,719.03 = 35,765.31/x
  3. Step 3: Cross multiply
    43,215.69x = 64,719.03 × 35,765.31
  4. Step 4: Simplify right side
    43,215.69x = 2,314,696,170.85
  5. Step 5: Solve for x
    x = 2,314,696,170.85/43,215.69
  6. Step 6: Final answer
    x = 53,561.48

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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.