Home / 75,321.04-112,982.22-19,161.20

Finding the Fourth Proportional to 75,321.04, 112,982.22 and 19,161.20

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Solution

The fourth proportional to 75,321.04, 112,982.22 and 19,161.20 is: 28,741.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,321.04 : 112,982.22 = 19,161.20 : x
  2. Step 2: Convert to fraction form
    75,321.04/112,982.22 = 19,161.20/x
  3. Step 3: Cross multiply
    75,321.04x = 112,982.22 × 19,161.20
  4. Step 4: Simplify right side
    75,321.04x = 2,164,874,913.86
  5. Step 5: Solve for x
    x = 2,164,874,913.86/75,321.04
  6. Step 6: Final answer
    x = 28,741.97

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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.