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Finding the Fourth Proportional to 70,082.55, 105,156.63 and 30,634.56

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Solution

The fourth proportional to 70,082.55, 105,156.63 and 30,634.56 is: 45,966.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,082.55 : 105,156.63 = 30,634.56 : x
  2. Step 2: Convert to fraction form
    70,082.55/105,156.63 = 30,634.56/x
  3. Step 3: Cross multiply
    70,082.55x = 105,156.63 × 30,634.56
  4. Step 4: Simplify right side
    70,082.55x = 3,221,427,091.13
  5. Step 5: Solve for x
    x = 3,221,427,091.13/70,082.55
  6. Step 6: Final answer
    x = 45,966.18

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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.