Home / 85,317.15-127,921.05-35,431.68

Finding the Fourth Proportional to 85,317.15, 127,921.05 and 35,431.68

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Solution

The fourth proportional to 85,317.15, 127,921.05 and 35,431.68 is: 53,124.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,317.15 : 127,921.05 = 35,431.68 : x
  2. Step 2: Convert to fraction form
    85,317.15/127,921.05 = 35,431.68/x
  3. Step 3: Cross multiply
    85,317.15x = 127,921.05 × 35,431.68
  4. Step 4: Simplify right side
    85,317.15x = 4,532,457,369.36
  5. Step 5: Solve for x
    x = 4,532,457,369.36/85,317.15
  6. Step 6: Final answer
    x = 53,124.81

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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.