Home / 43,319.82-64,943.28-21,121.77

Finding the Fourth Proportional to 43,319.82, 64,943.28 and 21,121.77

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Solution

The fourth proportional to 43,319.82, 64,943.28 and 21,121.77 is: 31,664.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,319.82 : 64,943.28 = 21,121.77 : x
  2. Step 2: Convert to fraction form
    43,319.82/64,943.28 = 21,121.77/x
  3. Step 3: Cross multiply
    43,319.82x = 64,943.28 × 21,121.77
  4. Step 4: Simplify right side
    43,319.82x = 1,371,717,023.21
  5. Step 5: Solve for x
    x = 1,371,717,023.21/43,319.82
  6. Step 6: Final answer
    x = 31,664.88

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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.