Home / 82,901.40-124,352.10-20,571.90

Finding the Fourth Proportional to 82,901.40, 124,352.10 and 20,571.90

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Solution

The fourth proportional to 82,901.40, 124,352.10 and 20,571.90 is: 30,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,901.40 : 124,352.10 = 20,571.90 : x
  2. Step 2: Convert to fraction form
    82,901.40/124,352.10 = 20,571.90/x
  3. Step 3: Cross multiply
    82,901.40x = 124,352.10 × 20,571.90
  4. Step 4: Simplify right side
    82,901.40x = 2,558,158,965.99
  5. Step 5: Solve for x
    x = 2,558,158,965.99/82,901.40
  6. Step 6: Final answer
    x = 30,857.85

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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.