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Finding the Fourth Proportional to 81,646.45, 112,664.33 and 45,828.25

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Solution

The fourth proportional to 81,646.45, 112,664.33 and 45,828.25 is: 63,238.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,646.45 : 112,664.33 = 45,828.25 : x
  2. Step 2: Convert to fraction form
    81,646.45/112,664.33 = 45,828.25/x
  3. Step 3: Cross multiply
    81,646.45x = 112,664.33 × 45,828.25
  4. Step 4: Simplify right side
    81,646.45x = 5,163,208,852.18
  5. Step 5: Solve for x
    x = 5,163,208,852.18/81,646.45
  6. Step 6: Final answer
    x = 63,238.62

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