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Finding the Fourth Proportional to 81,645.45, 112,662.94 and 45,827.25

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Solution

The fourth proportional to 81,645.45, 112,662.94 and 45,827.25 is: 63,237.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,645.45 : 112,662.94 = 45,827.25 : x
  2. Step 2: Convert to fraction form
    81,645.45/112,662.94 = 45,827.25/x
  3. Step 3: Cross multiply
    81,645.45x = 112,662.94 × 45,827.25
  4. Step 4: Simplify right side
    81,645.45x = 5,163,032,717.12
  5. Step 5: Solve for x
    x = 5,163,032,717.12/81,645.45
  6. Step 6: Final answer
    x = 63,237.24

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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.