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Finding the Fourth Proportional to 81,232.72, 112,113.84 and 49,411.60

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Solution

The fourth proportional to 81,232.72, 112,113.84 and 49,411.60 is: 68,195.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232.72 : 112,113.84 = 49,411.60 : x
  2. Step 2: Convert to fraction form
    81,232.72/112,113.84 = 49,411.60/x
  3. Step 3: Cross multiply
    81,232.72x = 112,113.84 × 49,411.60
  4. Step 4: Simplify right side
    81,232.72x = 5,539,724,216.54
  5. Step 5: Solve for x
    x = 5,539,724,216.54/81,232.72
  6. Step 6: Final answer
    x = 68,195.72

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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.