Home / 54,318.45-81,485.78-19,255.35

Finding the Fourth Proportional to 54,318.45, 81,485.78 and 19,255.35

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Solution

The fourth proportional to 54,318.45, 81,485.78 and 19,255.35 is: 28,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,318.45 : 81,485.78 = 19,255.35 : x
  2. Step 2: Convert to fraction form
    54,318.45/81,485.78 = 19,255.35/x
  3. Step 3: Cross multiply
    54,318.45x = 81,485.78 × 19,255.35
  4. Step 4: Simplify right side
    54,318.45x = 1,569,037,117.65
  5. Step 5: Solve for x
    x = 1,569,037,117.65/54,318.45
  6. Step 6: Final answer
    x = 28,885.90

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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.