Home / 54,209.70-81,206.55-47,715.30

Finding the Fourth Proportional to 54,209.70, 81,206.55 and 47,715.30

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Solution

The fourth proportional to 54,209.70, 81,206.55 and 47,715.30 is: 71,477.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,209.70 : 81,206.55 = 47,715.30 : x
  2. Step 2: Convert to fraction form
    54,209.70/81,206.55 = 47,715.30/x
  3. Step 3: Cross multiply
    54,209.70x = 81,206.55 × 47,715.30
  4. Step 4: Simplify right side
    54,209.70x = 3,874,794,895.22
  5. Step 5: Solve for x
    x = 3,874,794,895.22/54,209.70
  6. Step 6: Final answer
    x = 71,477.89

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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.