Home / 85,977.74-128,947.31-36,114.14

Finding the Fourth Proportional to 85,977.74, 128,947.31 and 36,114.14

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Solution

The fourth proportional to 85,977.74, 128,947.31 and 36,114.14 is: 54,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,977.74 : 128,947.31 = 36,114.14 : x
  2. Step 2: Convert to fraction form
    85,977.74/128,947.31 = 36,114.14/x
  3. Step 3: Cross multiply
    85,977.74x = 128,947.31 × 36,114.14
  4. Step 4: Simplify right side
    85,977.74x = 4,656,821,025.39
  5. Step 5: Solve for x
    x = 4,656,821,025.39/85,977.74
  6. Step 6: Final answer
    x = 54,163.10

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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.