Home / 57,236.15-78,986.12-31,744.90

Finding the Fourth Proportional to 57,236.15, 78,986.12 and 31,744.90

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Solution

The fourth proportional to 57,236.15, 78,986.12 and 31,744.90 is: 43,808.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,236.15 : 78,986.12 = 31,744.90 : x
  2. Step 2: Convert to fraction form
    57,236.15/78,986.12 = 31,744.90/x
  3. Step 3: Cross multiply
    57,236.15x = 78,986.12 × 31,744.90
  4. Step 4: Simplify right side
    57,236.15x = 2,507,406,362.68
  5. Step 5: Solve for x
    x = 2,507,406,362.68/57,236.15
  6. Step 6: Final answer
    x = 43,808.09

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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.