Home / 85,352.64-117,758.55-55,155.75

Finding the Fourth Proportional to 85,352.64, 117,758.55 and 55,155.75

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Solution

The fourth proportional to 85,352.64, 117,758.55 and 55,155.75 is: 76,096.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,352.64 : 117,758.55 = 55,155.75 : x
  2. Step 2: Convert to fraction form
    85,352.64/117,758.55 = 55,155.75/x
  3. Step 3: Cross multiply
    85,352.64x = 117,758.55 × 55,155.75
  4. Step 4: Simplify right side
    85,352.64x = 6,495,061,144.16
  5. Step 5: Solve for x
    x = 6,495,061,144.16/85,352.64
  6. Step 6: Final answer
    x = 76,096.78

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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.