Home / 54,281.20-81,429.90-19,218.10

Finding the Fourth Proportional to 54,281.20, 81,429.90 and 19,218.10

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Solution

The fourth proportional to 54,281.20, 81,429.90 and 19,218.10 is: 28,830.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,281.20 : 81,429.90 = 19,218.10 : x
  2. Step 2: Convert to fraction form
    54,281.20/81,429.90 = 19,218.10/x
  3. Step 3: Cross multiply
    54,281.20x = 81,429.90 × 19,218.10
  4. Step 4: Simplify right side
    54,281.20x = 1,564,927,961.19
  5. Step 5: Solve for x
    x = 1,564,927,961.19/54,281.20
  6. Step 6: Final answer
    x = 28,830.02

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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.