Home / 77,128.67-106,436.82-43,136.75

Finding the Fourth Proportional to 77,128.67, 106,436.82 and 43,136.75

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Solution

The fourth proportional to 77,128.67, 106,436.82 and 43,136.75 is: 59,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.67 : 106,436.82 = 43,136.75 : x
  2. Step 2: Convert to fraction form
    77,128.67/106,436.82 = 43,136.75/x
  3. Step 3: Cross multiply
    77,128.67x = 106,436.82 × 43,136.75
  4. Step 4: Simplify right side
    77,128.67x = 4,591,338,495.14
  5. Step 5: Solve for x
    x = 4,591,338,495.14/77,128.67
  6. Step 6: Final answer
    x = 59,528.30

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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.