Home / 75,275.20-112,912.84-19,119.52

Finding the Fourth Proportional to 75,275.20, 112,912.84 and 19,119.52

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Solution

The fourth proportional to 75,275.20, 112,912.84 and 19,119.52 is: 28,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,275.20 : 112,912.84 = 19,119.52 : x
  2. Step 2: Convert to fraction form
    75,275.20/112,912.84 = 19,119.52/x
  3. Step 3: Cross multiply
    75,275.20x = 112,912.84 × 19,119.52
  4. Step 4: Simplify right side
    75,275.20x = 2,158,839,302.64
  5. Step 5: Solve for x
    x = 2,158,839,302.64/75,275.20
  6. Step 6: Final answer
    x = 28,679.29

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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.