Home / 54,214.20-81,213.30-47,719.80

Finding the Fourth Proportional to 54,214.20, 81,213.30 and 47,719.80

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Solution

The fourth proportional to 54,214.20, 81,213.30 and 47,719.80 is: 71,484.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,214.20 : 81,213.30 = 47,719.80 : x
  2. Step 2: Convert to fraction form
    54,214.20/81,213.30 = 47,719.80/x
  3. Step 3: Cross multiply
    54,214.20x = 81,213.30 × 47,719.80
  4. Step 4: Simplify right side
    54,214.20x = 3,875,482,433.34
  5. Step 5: Solve for x
    x = 3,875,482,433.34/54,214.20
  6. Step 6: Final answer
    x = 71,484.64

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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.