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Finding the Fourth Proportional to 86,042.10, 118,746.54 and 49,745.10

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Solution

The fourth proportional to 86,042.10, 118,746.54 and 49,745.10 is: 68,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,042.10 : 118,746.54 = 49,745.10 : x
  2. Step 2: Convert to fraction form
    86,042.10/118,746.54 = 49,745.10/x
  3. Step 3: Cross multiply
    86,042.10x = 118,746.54 × 49,745.10
  4. Step 4: Simplify right side
    86,042.10x = 5,907,058,506.95
  5. Step 5: Solve for x
    x = 5,907,058,506.95/86,042.10
  6. Step 6: Final answer
    x = 68,653.12

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1.5x scale

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.