Home / 57,131.40-85,697.10-40,218.60

Finding the Fourth Proportional to 57,131.40, 85,697.10 and 40,218.60

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Solution

The fourth proportional to 57,131.40, 85,697.10 and 40,218.60 is: 60,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,131.40 : 85,697.10 = 40,218.60 : x
  2. Step 2: Convert to fraction form
    57,131.40/85,697.10 = 40,218.60/x
  3. Step 3: Cross multiply
    57,131.40x = 85,697.10 × 40,218.60
  4. Step 4: Simplify right side
    57,131.40x = 3,446,617,386.06
  5. Step 5: Solve for x
    x = 3,446,617,386.06/57,131.40
  6. Step 6: Final answer
    x = 60,327.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.