Home / 77,128.17-106,436.13-43,136.25

Finding the Fourth Proportional to 77,128.17, 106,436.13 and 43,136.25

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Solution

The fourth proportional to 77,128.17, 106,436.13 and 43,136.25 is: 59,527.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.17 : 106,436.13 = 43,136.25 : x
  2. Step 2: Convert to fraction form
    77,128.17/106,436.13 = 43,136.25/x
  3. Step 3: Cross multiply
    77,128.17x = 106,436.13 × 43,136.25
  4. Step 4: Simplify right side
    77,128.17x = 4,591,255,512.71
  5. Step 5: Solve for x
    x = 4,591,255,512.71/77,128.17
  6. Step 6: Final answer
    x = 59,527.61

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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.