Home / 85,664.40-128,422.68-41,230.02

Finding the Fourth Proportional to 85,664.40, 128,422.68 and 41,230.02

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Solution

The fourth proportional to 85,664.40, 128,422.68 and 41,230.02 is: 61,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,664.40 : 128,422.68 = 41,230.02 : x
  2. Step 2: Convert to fraction form
    85,664.40/128,422.68 = 41,230.02/x
  3. Step 3: Cross multiply
    85,664.40x = 128,422.68 × 41,230.02
  4. Step 4: Simplify right side
    85,664.40x = 5,294,869,664.85
  5. Step 5: Solve for x
    x = 5,294,869,664.85/85,664.40
  6. Step 6: Final answer
    x = 61,809.45

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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.