Home / 74,217.20-111,325.08-18,813.20

Finding the Fourth Proportional to 74,217.20, 111,325.08 and 18,813.20

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Solution

The fourth proportional to 74,217.20, 111,325.08 and 18,813.20 is: 28,219.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,217.20 : 111,325.08 = 18,813.20 : x
  2. Step 2: Convert to fraction form
    74,217.20/111,325.08 = 18,813.20/x
  3. Step 3: Cross multiply
    74,217.20x = 111,325.08 × 18,813.20
  4. Step 4: Simplify right side
    74,217.20x = 2,094,380,995.06
  5. Step 5: Solve for x
    x = 2,094,380,995.06/74,217.20
  6. Step 6: Final answer
    x = 28,219.62

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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.