Home / 39,705.73-54,795.35-21,800.57

Finding the Fourth Proportional to 39,705.73, 54,795.35 and 21,800.57

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Solution

The fourth proportional to 39,705.73, 54,795.35 and 21,800.57 is: 30,085.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,705.73 : 54,795.35 = 21,800.57 : x
  2. Step 2: Convert to fraction form
    39,705.73/54,795.35 = 21,800.57/x
  3. Step 3: Cross multiply
    39,705.73x = 54,795.35 × 21,800.57
  4. Step 4: Simplify right side
    39,705.73x = 1,194,569,643.87
  5. Step 5: Solve for x
    x = 1,194,569,643.87/39,705.73
  6. Step 6: Final answer
    x = 30,085.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.