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Finding the Fourth Proportional to 54,809.10, 82,246.05 and 39,980.70

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Solution

The fourth proportional to 54,809.10, 82,246.05 and 39,980.70 is: 59,994.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,809.10 : 82,246.05 = 39,980.70 : x
  2. Step 2: Convert to fraction form
    54,809.10/82,246.05 = 39,980.70/x
  3. Step 3: Cross multiply
    54,809.10x = 82,246.05 × 39,980.70
  4. Step 4: Simplify right side
    54,809.10x = 3,288,254,651.24
  5. Step 5: Solve for x
    x = 3,288,254,651.24/54,809.10
  6. Step 6: Final answer
    x = 59,994.68

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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.