Home / 85,355.52-117,790.24-47,629.76

Finding the Fourth Proportional to 85,355.52, 117,790.24 and 47,629.76

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Solution

The fourth proportional to 85,355.52, 117,790.24 and 47,629.76 is: 65,728.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,355.52 : 117,790.24 = 47,629.76 : x
  2. Step 2: Convert to fraction form
    85,355.52/117,790.24 = 47,629.76/x
  3. Step 3: Cross multiply
    85,355.52x = 117,790.24 × 47,629.76
  4. Step 4: Simplify right side
    85,355.52x = 5,610,320,861.54
  5. Step 5: Solve for x
    x = 5,610,320,861.54/85,355.52
  6. Step 6: Final answer
    x = 65,728.86

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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.