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Finding the Fourth Proportional to 81,922.58, 112,994.92 and 54,684.95

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Solution

The fourth proportional to 81,922.58, 112,994.92 and 54,684.95 is: 75,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,922.58 : 112,994.92 = 54,684.95 : x
  2. Step 2: Convert to fraction form
    81,922.58/112,994.92 = 54,684.95/x
  3. Step 3: Cross multiply
    81,922.58x = 112,994.92 × 54,684.95
  4. Step 4: Simplify right side
    81,922.58x = 6,179,120,848.77
  5. Step 5: Solve for x
    x = 6,179,120,848.77/81,922.58
  6. Step 6: Final answer
    x = 75,426.35

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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.