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Finding the Fourth Proportional to 54,221.80, 81,462.30 and 48,519.40

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Solution

The fourth proportional to 54,221.80, 81,462.30 and 48,519.40 is: 72,895.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,221.80 : 81,462.30 = 48,519.40 : x
  2. Step 2: Convert to fraction form
    54,221.80/81,462.30 = 48,519.40/x
  3. Step 3: Cross multiply
    54,221.80x = 81,462.30 × 48,519.40
  4. Step 4: Simplify right side
    54,221.80x = 3,952,501,918.62
  5. Step 5: Solve for x
    x = 3,952,501,918.62/54,221.80
  6. Step 6: Final answer
    x = 72,895.07

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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.