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Finding the Fourth Proportional to 73,077.21, 100,846.53 and 39,543.21

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Solution

The fourth proportional to 73,077.21, 100,846.53 and 39,543.21 is: 54,569.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,077.21 : 100,846.53 = 39,543.21 : x
  2. Step 2: Convert to fraction form
    73,077.21/100,846.53 = 39,543.21/x
  3. Step 3: Cross multiply
    73,077.21x = 100,846.53 × 39,543.21
  4. Step 4: Simplify right side
    73,077.21x = 3,987,795,513.56
  5. Step 5: Solve for x
    x = 3,987,795,513.56/73,077.21
  6. Step 6: Final answer
    x = 54,569.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.