Home / 72,020.85-108,037.04-19,429.57

Finding the Fourth Proportional to 72,020.85, 108,037.04 and 19,429.57

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Solution

The fourth proportional to 72,020.85, 108,037.04 and 19,429.57 is: 29,145.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,020.85 : 108,037.04 = 19,429.57 : x
  2. Step 2: Convert to fraction form
    72,020.85/108,037.04 = 19,429.57/x
  3. Step 3: Cross multiply
    72,020.85x = 108,037.04 × 19,429.57
  4. Step 4: Simplify right side
    72,020.85x = 2,099,113,378.46
  5. Step 5: Solve for x
    x = 2,099,113,378.46/72,020.85
  6. Step 6: Final answer
    x = 29,145.91

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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.