Home / 77,627.09-107,136.72-43,638.38

Finding the Fourth Proportional to 77,627.09, 107,136.72 and 43,638.38

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Solution

The fourth proportional to 77,627.09, 107,136.72 and 43,638.38 is: 60,227.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,627.09 : 107,136.72 = 43,638.38 : x
  2. Step 2: Convert to fraction form
    77,627.09/107,136.72 = 43,638.38/x
  3. Step 3: Cross multiply
    77,627.09x = 107,136.72 × 43,638.38
  4. Step 4: Simplify right side
    77,627.09x = 4,675,272,363.63
  5. Step 5: Solve for x
    x = 4,675,272,363.63/77,627.09
  6. Step 6: Final answer
    x = 60,227.33

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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.