Home / 54,458.51-81,692.81-21,181.08

Finding the Fourth Proportional to 54,458.51, 81,692.81 and 21,181.08

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Solution

The fourth proportional to 54,458.51, 81,692.81 and 21,181.08 is: 31,773.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,458.51 : 81,692.81 = 21,181.08 : x
  2. Step 2: Convert to fraction form
    54,458.51/81,692.81 = 21,181.08/x
  3. Step 3: Cross multiply
    54,458.51x = 81,692.81 × 21,181.08
  4. Step 4: Simplify right side
    54,458.51x = 1,730,341,838.13
  5. Step 5: Solve for x
    x = 1,730,341,838.13/54,458.51
  6. Step 6: Final answer
    x = 31,773.58

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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.