Home / 54,529.55-81,778.52-21,242.20

Finding the Fourth Proportional to 54,529.55, 81,778.52 and 21,242.20

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Solution

The fourth proportional to 54,529.55, 81,778.52 and 21,242.20 is: 31,857.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,529.55 : 81,778.52 = 21,242.20 : x
  2. Step 2: Convert to fraction form
    54,529.55/81,778.52 = 21,242.20/x
  3. Step 3: Cross multiply
    54,529.55x = 81,778.52 × 21,242.20
  4. Step 4: Simplify right side
    54,529.55x = 1,737,155,526.20
  5. Step 5: Solve for x
    x = 1,737,155,526.20/54,529.55
  6. Step 6: Final answer
    x = 31,857.14

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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.