Home / 51,813.20-71,507.40-31,679.12

Finding the Fourth Proportional to 51,813.20, 71,507.40 and 31,679.12

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Solution

The fourth proportional to 51,813.20, 71,507.40 and 31,679.12 is: 43,720.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,813.20 : 71,507.40 = 31,679.12 : x
  2. Step 2: Convert to fraction form
    51,813.20/71,507.40 = 31,679.12/x
  3. Step 3: Cross multiply
    51,813.20x = 71,507.40 × 31,679.12
  4. Step 4: Simplify right side
    51,813.20x = 2,265,291,505.49
  5. Step 5: Solve for x
    x = 2,265,291,505.49/51,813.20
  6. Step 6: Final answer
    x = 43,720.36

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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.