Home / 81,639.72-122,459.58-26,240.04

Finding the Fourth Proportional to 81,639.72, 122,459.58 and 26,240.04

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Solution

The fourth proportional to 81,639.72, 122,459.58 and 26,240.04 is: 39,360.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,639.72 : 122,459.58 = 26,240.04 : x
  2. Step 2: Convert to fraction form
    81,639.72/122,459.58 = 26,240.04/x
  3. Step 3: Cross multiply
    81,639.72x = 122,459.58 × 26,240.04
  4. Step 4: Simplify right side
    81,639.72x = 3,213,344,277.58
  5. Step 5: Solve for x
    x = 3,213,344,277.58/81,639.72
  6. Step 6: Final answer
    x = 39,360.06

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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.