Home / 85,954.11-128,981.36-36,030.37

Finding the Fourth Proportional to 85,954.11, 128,981.36 and 36,030.37

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Solution

The fourth proportional to 85,954.11, 128,981.36 and 36,030.37 is: 54,066.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954.11 : 128,981.36 = 36,030.37 : x
  2. Step 2: Convert to fraction form
    85,954.11/128,981.36 = 36,030.37/x
  3. Step 3: Cross multiply
    85,954.11x = 128,981.36 × 36,030.37
  4. Step 4: Simplify right side
    85,954.11x = 4,647,246,133.37
  5. Step 5: Solve for x
    x = 4,647,246,133.37/85,954.11
  6. Step 6: Final answer
    x = 54,066.59

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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.