Home / 70,328.12-105,419.28-43,972.34

Finding the Fourth Proportional to 70,328.12, 105,419.28 and 43,972.34

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Solution

The fourth proportional to 70,328.12, 105,419.28 and 43,972.34 is: 65,912.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,328.12 : 105,419.28 = 43,972.34 : x
  2. Step 2: Convert to fraction form
    70,328.12/105,419.28 = 43,972.34/x
  3. Step 3: Cross multiply
    70,328.12x = 105,419.28 × 43,972.34
  4. Step 4: Simplify right side
    70,328.12x = 4,635,532,422.72
  5. Step 5: Solve for x
    x = 4,635,532,422.72/70,328.12
  6. Step 6: Final answer
    x = 65,912.93

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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.