Home / 42,744.08-64,123.44-13,161.36

Finding the Fourth Proportional to 42,744.08, 64,123.44 and 13,161.36

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Solution

The fourth proportional to 42,744.08, 64,123.44 and 13,161.36 is: 19,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,744.08 : 64,123.44 = 13,161.36 : x
  2. Step 2: Convert to fraction form
    42,744.08/64,123.44 = 13,161.36/x
  3. Step 3: Cross multiply
    42,744.08x = 64,123.44 × 13,161.36
  4. Step 4: Simplify right side
    42,744.08x = 843,951,678.28
  5. Step 5: Solve for x
    x = 843,951,678.28/42,744.08
  6. Step 6: Final answer
    x = 19,744.29

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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.