Home / 81,700.36-122,560.98-29,115.16

Finding the Fourth Proportional to 81,700.36, 122,560.98 and 29,115.16

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Solution

The fourth proportional to 81,700.36, 122,560.98 and 29,115.16 is: 43,676.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,700.36 : 122,560.98 = 29,115.16 : x
  2. Step 2: Convert to fraction form
    81,700.36/122,560.98 = 29,115.16/x
  3. Step 3: Cross multiply
    81,700.36x = 122,560.98 × 29,115.16
  4. Step 4: Simplify right side
    81,700.36x = 3,568,382,542.46
  5. Step 5: Solve for x
    x = 3,568,382,542.46/81,700.36
  6. Step 6: Final answer
    x = 43,676.46

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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.