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Finding the Fourth Proportional to 57,866.75, 79,856.60 and 31,370.75

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Solution

The fourth proportional to 57,866.75, 79,856.60 and 31,370.75 is: 43,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,866.75 : 79,856.60 = 31,370.75 : x
  2. Step 2: Convert to fraction form
    57,866.75/79,856.60 = 31,370.75/x
  3. Step 3: Cross multiply
    57,866.75x = 79,856.60 × 31,370.75
  4. Step 4: Simplify right side
    57,866.75x = 2,505,161,277.60
  5. Step 5: Solve for x
    x = 2,505,161,277.60/57,866.75
  6. Step 6: Final answer
    x = 43,291.90

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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.