Home / 81,082.54-121,679.18-28,492.03

Finding the Fourth Proportional to 81,082.54, 121,679.18 and 28,492.03

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Solution

The fourth proportional to 81,082.54, 121,679.18 and 28,492.03 is: 42,757.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,082.54 : 121,679.18 = 28,492.03 : x
  2. Step 2: Convert to fraction form
    81,082.54/121,679.18 = 28,492.03/x
  3. Step 3: Cross multiply
    81,082.54x = 121,679.18 × 28,492.03
  4. Step 4: Simplify right side
    81,082.54x = 3,466,886,846.94
  5. Step 5: Solve for x
    x = 3,466,886,846.94/81,082.54
  6. Step 6: Final answer
    x = 42,757.50

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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.