Home / 75,105.43-112,617.74-30,104.20

Finding the Fourth Proportional to 75,105.43, 112,617.74 and 30,104.20

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Solution

The fourth proportional to 75,105.43, 112,617.74 and 30,104.20 is: 45,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,105.43 : 112,617.74 = 30,104.20 : x
  2. Step 2: Convert to fraction form
    75,105.43/112,617.74 = 30,104.20/x
  3. Step 3: Cross multiply
    75,105.43x = 112,617.74 × 30,104.20
  4. Step 4: Simplify right side
    75,105.43x = 3,390,266,817.99
  5. Step 5: Solve for x
    x = 3,390,266,817.99/75,105.43
  6. Step 6: Final answer
    x = 45,140.10

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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.