Home / 82,215.20-123,322.80-29,626.40

Finding the Fourth Proportional to 82,215.20, 123,322.80 and 29,626.40

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Solution

The fourth proportional to 82,215.20, 123,322.80 and 29,626.40 is: 44,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,215.20 : 123,322.80 = 29,626.40 : x
  2. Step 2: Convert to fraction form
    82,215.20/123,322.80 = 29,626.40/x
  3. Step 3: Cross multiply
    82,215.20x = 123,322.80 × 29,626.40
  4. Step 4: Simplify right side
    82,215.20x = 3,653,610,601.92
  5. Step 5: Solve for x
    x = 3,653,610,601.92/82,215.20
  6. Step 6: Final answer
    x = 44,439.60

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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.