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Finding the Fourth Proportional to 81,625.73, 112,629.29 and 45,817.25

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Solution

The fourth proportional to 81,625.73, 112,629.29 and 45,817.25 is: 63,219.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,625.73 : 112,629.29 = 45,817.25 : x
  2. Step 2: Convert to fraction form
    81,625.73/112,629.29 = 45,817.25/x
  3. Step 3: Cross multiply
    81,625.73x = 112,629.29 × 45,817.25
  4. Step 4: Simplify right side
    81,625.73x = 5,160,363,545.02
  5. Step 5: Solve for x
    x = 5,160,363,545.02/81,625.73
  6. Step 6: Final answer
    x = 63,219.82

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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.