Home / 75,275.08-112,912.66-19,119.40

Finding the Fourth Proportional to 75,275.08, 112,912.66 and 19,119.40

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Solution

The fourth proportional to 75,275.08, 112,912.66 and 19,119.40 is: 28,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,275.08 : 112,912.66 = 19,119.40 : x
  2. Step 2: Convert to fraction form
    75,275.08/112,912.66 = 19,119.40/x
  3. Step 3: Cross multiply
    75,275.08x = 112,912.66 × 19,119.40
  4. Step 4: Simplify right side
    75,275.08x = 2,158,822,311.60
  5. Step 5: Solve for x
    x = 2,158,822,311.60/75,275.08
  6. Step 6: Final answer
    x = 28,679.11

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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.