Home / 85,806.08-118,474.08-55,635.20

Finding the Fourth Proportional to 85,806.08, 118,474.08 and 55,635.20

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Solution

The fourth proportional to 85,806.08, 118,474.08 and 55,635.20 is: 76,816.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,806.08 : 118,474.08 = 55,635.20 : x
  2. Step 2: Convert to fraction form
    85,806.08/118,474.08 = 55,635.20/x
  3. Step 3: Cross multiply
    85,806.08x = 118,474.08 × 55,635.20
  4. Step 4: Simplify right side
    85,806.08x = 6,591,329,135.62
  5. Step 5: Solve for x
    x = 6,591,329,135.62/85,806.08
  6. Step 6: Final answer
    x = 76,816.57

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1.5x scale

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.