Home / 81,082.20-121,331.70-54,838.20

Finding the Fourth Proportional to 81,082.20, 121,331.70 and 54,838.20

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Solution

The fourth proportional to 81,082.20, 121,331.70 and 54,838.20 is: 82,060.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,082.20 : 121,331.70 = 54,838.20 : x
  2. Step 2: Convert to fraction form
    81,082.20/121,331.70 = 54,838.20/x
  3. Step 3: Cross multiply
    81,082.20x = 121,331.70 × 54,838.20
  4. Step 4: Simplify right side
    81,082.20x = 6,653,612,030.94
  5. Step 5: Solve for x
    x = 6,653,612,030.94/81,082.20
  6. Step 6: Final answer
    x = 82,060.08

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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.