Home / 57,018.25-78,685.19-31,867.75

Finding the Fourth Proportional to 57,018.25, 78,685.19 and 31,867.75

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Solution

The fourth proportional to 57,018.25, 78,685.19 and 31,867.75 is: 43,977.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,018.25 : 78,685.19 = 31,867.75 : x
  2. Step 2: Convert to fraction form
    57,018.25/78,685.19 = 31,867.75/x
  3. Step 3: Cross multiply
    57,018.25x = 78,685.19 × 31,867.75
  4. Step 4: Simplify right side
    57,018.25x = 2,507,519,963.62
  5. Step 5: Solve for x
    x = 2,507,519,963.62/57,018.25
  6. Step 6: Final answer
    x = 43,977.50

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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.