Home / 81,331.80-121,760.10-58,003.80

Finding the Fourth Proportional to 81,331.80, 121,760.10 and 58,003.80

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Solution

The fourth proportional to 81,331.80, 121,760.10 and 58,003.80 is: 86,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.80 : 121,760.10 = 58,003.80 : x
  2. Step 2: Convert to fraction form
    81,331.80/121,760.10 = 58,003.80/x
  3. Step 3: Cross multiply
    81,331.80x = 121,760.10 × 58,003.80
  4. Step 4: Simplify right side
    81,331.80x = 7,062,548,488.38
  5. Step 5: Solve for x
    x = 7,062,548,488.38/81,331.80
  6. Step 6: Final answer
    x = 86,836.25

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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.