Home / 81,518.24-112,447.39-51,255.60

Finding the Fourth Proportional to 81,518.24, 112,447.39 and 51,255.60

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Solution

The fourth proportional to 81,518.24, 112,447.39 and 51,255.60 is: 70,702.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,518.24 : 112,447.39 = 51,255.60 : x
  2. Step 2: Convert to fraction form
    81,518.24/112,447.39 = 51,255.60/x
  3. Step 3: Cross multiply
    81,518.24x = 112,447.39 × 51,255.60
  4. Step 4: Simplify right side
    81,518.24x = 5,763,558,442.88
  5. Step 5: Solve for x
    x = 5,763,558,442.88/81,518.24
  6. Step 6: Final answer
    x = 70,702.68

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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.