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Finding the Fourth Proportional to 70,236.06, 105,354.20 and 28,683.06

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Solution

The fourth proportional to 70,236.06, 105,354.20 and 28,683.06 is: 43,024.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,236.06 : 105,354.20 = 28,683.06 : x
  2. Step 2: Convert to fraction form
    70,236.06/105,354.20 = 28,683.06/x
  3. Step 3: Cross multiply
    70,236.06x = 105,354.20 × 28,683.06
  4. Step 4: Simplify right side
    70,236.06x = 3,021,880,839.85
  5. Step 5: Solve for x
    x = 3,021,880,839.85/70,236.06
  6. Step 6: Final answer
    x = 43,024.63

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1.5x scale

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.