Home / 81,979.13-122,950.24-53,507.12

Finding the Fourth Proportional to 81,979.13, 122,950.24 and 53,507.12

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Solution

The fourth proportional to 81,979.13, 122,950.24 and 53,507.12 is: 80,248.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,979.13 : 122,950.24 = 53,507.12 : x
  2. Step 2: Convert to fraction form
    81,979.13/122,950.24 = 53,507.12/x
  3. Step 3: Cross multiply
    81,979.13x = 122,950.24 × 53,507.12
  4. Step 4: Simplify right side
    81,979.13x = 6,578,713,245.71
  5. Step 5: Solve for x
    x = 6,578,713,245.71/81,979.13
  6. Step 6: Final answer
    x = 80,248.63

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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.