Home / 85,451.28-117,924.60-47,725.60

Finding the Fourth Proportional to 85,451.28, 117,924.60 and 47,725.60

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Solution

The fourth proportional to 85,451.28, 117,924.60 and 47,725.60 is: 65,862.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,451.28 : 117,924.60 = 47,725.60 : x
  2. Step 2: Convert to fraction form
    85,451.28/117,924.60 = 47,725.60/x
  3. Step 3: Cross multiply
    85,451.28x = 117,924.60 × 47,725.60
  4. Step 4: Simplify right side
    85,451.28x = 5,628,022,289.76
  5. Step 5: Solve for x
    x = 5,628,022,289.76/85,451.28
  6. Step 6: Final answer
    x = 65,862.35

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Half scale
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Double scale
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Similar ratio
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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.