Home / 43,151.18-64,633.31-20,918.06

Finding the Fourth Proportional to 43,151.18, 64,633.31 and 20,918.06

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Solution

The fourth proportional to 43,151.18, 64,633.31 and 20,918.06 is: 31,331.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,151.18 : 64,633.31 = 20,918.06 : x
  2. Step 2: Convert to fraction form
    43,151.18/64,633.31 = 20,918.06/x
  3. Step 3: Cross multiply
    43,151.18x = 64,633.31 × 20,918.06
  4. Step 4: Simplify right side
    43,151.18x = 1,352,003,028.82
  5. Step 5: Solve for x
    x = 1,352,003,028.82/43,151.18
  6. Step 6: Final answer
    x = 31,331.77

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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.