Home / 54,135.10-81,165.69-28,838.39

Finding the Fourth Proportional to 54,135.10, 81,165.69 and 28,838.39

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Solution

The fourth proportional to 54,135.10, 81,165.69 and 28,838.39 is: 43,237.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,135.10 : 81,165.69 = 28,838.39 : x
  2. Step 2: Convert to fraction form
    54,135.10/81,165.69 = 28,838.39/x
  3. Step 3: Cross multiply
    54,135.10x = 81,165.69 × 28,838.39
  4. Step 4: Simplify right side
    54,135.10x = 2,340,688,025.75
  5. Step 5: Solve for x
    x = 2,340,688,025.75/54,135.10
  6. Step 6: Final answer
    x = 43,237.90

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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.