Home / 84,311.56-126,464.29-21,132.16

Finding the Fourth Proportional to 84,311.56, 126,464.29 and 21,132.16

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Solution

The fourth proportional to 84,311.56, 126,464.29 and 21,132.16 is: 31,697.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,311.56 : 126,464.29 = 21,132.16 : x
  2. Step 2: Convert to fraction form
    84,311.56/126,464.29 = 21,132.16/x
  3. Step 3: Cross multiply
    84,311.56x = 126,464.29 × 21,132.16
  4. Step 4: Simplify right side
    84,311.56x = 2,672,463,610.57
  5. Step 5: Solve for x
    x = 2,672,463,610.57/84,311.56
  6. Step 6: Final answer
    x = 31,697.48

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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.