Home / 52,243.52-78,364.92-21,078.32

Finding the Fourth Proportional to 52,243.52, 78,364.92 and 21,078.32

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Solution

The fourth proportional to 52,243.52, 78,364.92 and 21,078.32 is: 31,617.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,243.52 : 78,364.92 = 21,078.32 : x
  2. Step 2: Convert to fraction form
    52,243.52/78,364.92 = 21,078.32/x
  3. Step 3: Cross multiply
    52,243.52x = 78,364.92 × 21,078.32
  4. Step 4: Simplify right side
    52,243.52x = 1,651,800,860.53
  5. Step 5: Solve for x
    x = 1,651,800,860.53/52,243.52
  6. Step 6: Final answer
    x = 31,617.33

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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.