Home / 85,664.39-128,422.68-41,230.01

Finding the Fourth Proportional to 85,664.39, 128,422.68 and 41,230.01

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Solution

The fourth proportional to 85,664.39, 128,422.68 and 41,230.01 is: 61,809.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,664.39 : 128,422.68 = 41,230.01 : x
  2. Step 2: Convert to fraction form
    85,664.39/128,422.68 = 41,230.01/x
  3. Step 3: Cross multiply
    85,664.39x = 128,422.68 × 41,230.01
  4. Step 4: Simplify right side
    85,664.39x = 5,294,868,380.63
  5. Step 5: Solve for x
    x = 5,294,868,380.63/85,664.39
  6. Step 6: Final answer
    x = 61,809.44

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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.