Home / 72,431.60-108,611.82-30,299.04

Finding the Fourth Proportional to 72,431.60, 108,611.82 and 30,299.04

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Solution

The fourth proportional to 72,431.60, 108,611.82 and 30,299.04 is: 45,433.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,431.60 : 108,611.82 = 30,299.04 : x
  2. Step 2: Convert to fraction form
    72,431.60/108,611.82 = 30,299.04/x
  3. Step 3: Cross multiply
    72,431.60x = 108,611.82 × 30,299.04
  4. Step 4: Simplify right side
    72,431.60x = 3,290,833,878.65
  5. Step 5: Solve for x
    x = 3,290,833,878.65/72,431.60
  6. Step 6: Final answer
    x = 45,433.68

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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.