Home / 75,106.43-112,619.23-30,105.20

Finding the Fourth Proportional to 75,106.43, 112,619.23 and 30,105.20

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Solution

The fourth proportional to 75,106.43, 112,619.23 and 30,105.20 is: 45,141.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,106.43 : 112,619.23 = 30,105.20 : x
  2. Step 2: Convert to fraction form
    75,106.43/112,619.23 = 30,105.20/x
  3. Step 3: Cross multiply
    75,106.43x = 112,619.23 × 30,105.20
  4. Step 4: Simplify right side
    75,106.43x = 3,390,424,443.00
  5. Step 5: Solve for x
    x = 3,390,424,443.00/75,106.43
  6. Step 6: Final answer
    x = 45,141.60

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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.