Home / 81,774.03-122,660.63-21,808.74

Finding the Fourth Proportional to 81,774.03, 122,660.63 and 21,808.74

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Solution

The fourth proportional to 81,774.03, 122,660.63 and 21,808.74 is: 32,713.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,774.03 : 122,660.63 = 21,808.74 : x
  2. Step 2: Convert to fraction form
    81,774.03/122,660.63 = 21,808.74/x
  3. Step 3: Cross multiply
    81,774.03x = 122,660.63 × 21,808.74
  4. Step 4: Simplify right side
    81,774.03x = 2,675,073,787.91
  5. Step 5: Solve for x
    x = 2,675,073,787.91/81,774.03
  6. Step 6: Final answer
    x = 32,713.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.