Home / 39,669.87-54,744.50-21,765.01

Finding the Fourth Proportional to 39,669.87, 54,744.50 and 21,765.01

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Solution

The fourth proportional to 39,669.87, 54,744.50 and 21,765.01 is: 30,035.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,669.87 : 54,744.50 = 21,765.01 : x
  2. Step 2: Convert to fraction form
    39,669.87/54,744.50 = 21,765.01/x
  3. Step 3: Cross multiply
    39,669.87x = 54,744.50 × 21,765.01
  4. Step 4: Simplify right side
    39,669.87x = 1,191,514,356.82
  5. Step 5: Solve for x
    x = 1,191,514,356.82/39,669.87
  6. Step 6: Final answer
    x = 30,035.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.