Home / 85,669.92-118,114.56-55,404

Finding the Fourth Proportional to 85,669.92, 118,114.56 and 55,404

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Solution

The fourth proportional to 85,669.92, 118,114.56 and 55,404 is: 76,386.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,669.92 : 118,114.56 = 55,404 : x
  2. Step 2: Convert to fraction form
    85,669.92/118,114.56 = 55,404/x
  3. Step 3: Cross multiply
    85,669.92x = 118,114.56 × 55,404
  4. Step 4: Simplify right side
    85,669.92x = 6,544,019,082.24
  5. Step 5: Solve for x
    x = 6,544,019,082.24/85,669.92
  6. Step 6: Final answer
    x = 76,386.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.