Home / 57,161.36-78,898.80-40,169.60

Finding the Fourth Proportional to 57,161.36, 78,898.80 and 40,169.60

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Solution

The fourth proportional to 57,161.36, 78,898.80 and 40,169.60 is: 55,445.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,161.36 : 78,898.80 = 40,169.60 : x
  2. Step 2: Convert to fraction form
    57,161.36/78,898.80 = 40,169.60/x
  3. Step 3: Cross multiply
    57,161.36x = 78,898.80 × 40,169.60
  4. Step 4: Simplify right side
    57,161.36x = 3,169,333,236.48
  5. Step 5: Solve for x
    x = 3,169,333,236.48/57,161.36
  6. Step 6: Final answer
    x = 55,445.38

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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.