Home / 82,759.04-124,137.12-20,429.60

Finding the Fourth Proportional to 82,759.04, 124,137.12 and 20,429.60

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Solution

The fourth proportional to 82,759.04, 124,137.12 and 20,429.60 is: 30,644.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,759.04 : 124,137.12 = 20,429.60 : x
  2. Step 2: Convert to fraction form
    82,759.04/124,137.12 = 20,429.60/x
  3. Step 3: Cross multiply
    82,759.04x = 124,137.12 × 20,429.60
  4. Step 4: Simplify right side
    82,759.04x = 2,536,071,706.75
  5. Step 5: Solve for x
    x = 2,536,071,706.75/82,759.04
  6. Step 6: Final answer
    x = 30,644.04

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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.