Home / 82,221.80-123,390.30-52,711.40

Finding the Fourth Proportional to 82,221.80, 123,390.30 and 52,711.40

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Solution

The fourth proportional to 82,221.80, 123,390.30 and 52,711.40 is: 79,104.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,221.80 : 123,390.30 = 52,711.40 : x
  2. Step 2: Convert to fraction form
    82,221.80/123,390.30 = 52,711.40/x
  3. Step 3: Cross multiply
    82,221.80x = 123,390.30 × 52,711.40
  4. Step 4: Simplify right side
    82,221.80x = 6,504,075,459.42
  5. Step 5: Solve for x
    x = 6,504,075,459.42/82,221.80
  6. Step 6: Final answer
    x = 79,104.03

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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.