Home / 75,018.12-112,524.12-18,858.60

Finding the Fourth Proportional to 75,018.12, 112,524.12 and 18,858.60

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Solution

The fourth proportional to 75,018.12, 112,524.12 and 18,858.60 is: 28,287.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,018.12 : 112,524.12 = 18,858.60 : x
  2. Step 2: Convert to fraction form
    75,018.12/112,524.12 = 18,858.60/x
  3. Step 3: Cross multiply
    75,018.12x = 112,524.12 × 18,858.60
  4. Step 4: Simplify right side
    75,018.12x = 2,122,047,369.43
  5. Step 5: Solve for x
    x = 2,122,047,369.43/75,018.12
  6. Step 6: Final answer
    x = 28,287.13

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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.