Home / 49,815.08-74,742.60-20,235.20

Finding the Fourth Proportional to 49,815.08, 74,742.60 and 20,235.20

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Solution

The fourth proportional to 49,815.08, 74,742.60 and 20,235.20 is: 30,360.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,815.08 : 74,742.60 = 20,235.20 : x
  2. Step 2: Convert to fraction form
    49,815.08/74,742.60 = 20,235.20/x
  3. Step 3: Cross multiply
    49,815.08x = 74,742.60 × 20,235.20
  4. Step 4: Simplify right side
    49,815.08x = 1,512,431,459.52
  5. Step 5: Solve for x
    x = 1,512,431,459.52/49,815.08
  6. Step 6: Final answer
    x = 30,360.92

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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.