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Finding the Fourth Proportional to 43,242.54, 64,863.81 and 19,888.62

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Solution

The fourth proportional to 43,242.54, 64,863.81 and 19,888.62 is: 29,832.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,242.54 : 64,863.81 = 19,888.62 : x
  2. Step 2: Convert to fraction form
    43,242.54/64,863.81 = 19,888.62/x
  3. Step 3: Cross multiply
    43,242.54x = 64,863.81 × 19,888.62
  4. Step 4: Simplify right side
    43,242.54x = 1,290,051,668.84
  5. Step 5: Solve for x
    x = 1,290,051,668.84/43,242.54
  6. Step 6: Final answer
    x = 29,832.93

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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.