Home / 42,816.12-64,242.65-17,861.09

Finding the Fourth Proportional to 42,816.12, 64,242.65 and 17,861.09

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Solution

The fourth proportional to 42,816.12, 64,242.65 and 17,861.09 is: 26,799.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,816.12 : 64,242.65 = 17,861.09 : x
  2. Step 2: Convert to fraction form
    42,816.12/64,242.65 = 17,861.09/x
  3. Step 3: Cross multiply
    42,816.12x = 64,242.65 × 17,861.09
  4. Step 4: Simplify right side
    42,816.12x = 1,147,443,342.97
  5. Step 5: Solve for x
    x = 1,147,443,342.97/42,816.12
  6. Step 6: Final answer
    x = 26,799.33

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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.