Home / 57,142.60-78,816.30-49,171.12

Finding the Fourth Proportional to 57,142.60, 78,816.30 and 49,171.12

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Solution

The fourth proportional to 57,142.60, 78,816.30 and 49,171.12 is: 67,821.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,142.60 : 78,816.30 = 49,171.12 : x
  2. Step 2: Convert to fraction form
    57,142.60/78,816.30 = 49,171.12/x
  3. Step 3: Cross multiply
    57,142.60x = 78,816.30 × 49,171.12
  4. Step 4: Simplify right side
    57,142.60x = 3,875,485,745.26
  5. Step 5: Solve for x
    x = 3,875,485,745.26/57,142.60
  6. Step 6: Final answer
    x = 67,821.31

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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.