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Finding the Fourth Proportional to 70,492.60, 105,825.30 and 69,974.20

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Solution

The fourth proportional to 70,492.60, 105,825.30 and 69,974.20 is: 105,047.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,492.60 : 105,825.30 = 69,974.20 : x
  2. Step 2: Convert to fraction form
    70,492.60/105,825.30 = 69,974.20/x
  3. Step 3: Cross multiply
    70,492.60x = 105,825.30 × 69,974.20
  4. Step 4: Simplify right side
    70,492.60x = 7,405,040,707.26
  5. Step 5: Solve for x
    x = 7,405,040,707.26/70,492.60
  6. Step 6: Final answer
    x = 105,047.06

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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.