Home / 77,128.04-106,435.96-43,136.12

Finding the Fourth Proportional to 77,128.04, 106,435.96 and 43,136.12

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Solution

The fourth proportional to 77,128.04, 106,435.96 and 43,136.12 is: 59,527.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.04 : 106,435.96 = 43,136.12 : x
  2. Step 2: Convert to fraction form
    77,128.04/106,435.96 = 43,136.12/x
  3. Step 3: Cross multiply
    77,128.04x = 106,435.96 × 43,136.12
  4. Step 4: Simplify right side
    77,128.04x = 4,591,234,501.12
  5. Step 5: Solve for x
    x = 4,591,234,501.12/77,128.04
  6. Step 6: Final answer
    x = 59,527.43

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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.