Home / 81,128.28-111,963.09-46,683.57

Finding the Fourth Proportional to 81,128.28, 111,963.09 and 46,683.57

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Solution

The fourth proportional to 81,128.28, 111,963.09 and 46,683.57 is: 64,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,128.28 : 111,963.09 = 46,683.57 : x
  2. Step 2: Convert to fraction form
    81,128.28/111,963.09 = 46,683.57/x
  3. Step 3: Cross multiply
    81,128.28x = 111,963.09 × 46,683.57
  4. Step 4: Simplify right side
    81,128.28x = 5,226,836,005.78
  5. Step 5: Solve for x
    x = 5,226,836,005.78/81,128.28
  6. Step 6: Final answer
    x = 64,426.80

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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.