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Finding the Fourth Proportional to 84,107.06, 126,048.50 and 39,745.58

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Solution

The fourth proportional to 84,107.06, 126,048.50 and 39,745.58 is: 59,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,107.06 : 126,048.50 = 39,745.58 : x
  2. Step 2: Convert to fraction form
    84,107.06/126,048.50 = 39,745.58/x
  3. Step 3: Cross multiply
    84,107.06x = 126,048.50 × 39,745.58
  4. Step 4: Simplify right side
    84,107.06x = 5,009,870,541.90
  5. Step 5: Solve for x
    x = 5,009,870,541.90/84,107.06
  6. Step 6: Final answer
    x = 59,565.40

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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.