Home / 85,631.32-118,171.54-47,905.56

Finding the Fourth Proportional to 85,631.32, 118,171.54 and 47,905.56

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Solution

The fourth proportional to 85,631.32, 118,171.54 and 47,905.56 is: 66,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,631.32 : 118,171.54 = 47,905.56 : x
  2. Step 2: Convert to fraction form
    85,631.32/118,171.54 = 47,905.56/x
  3. Step 3: Cross multiply
    85,631.32x = 118,171.54 × 47,905.56
  4. Step 4: Simplify right side
    85,631.32x = 5,661,073,799.76
  5. Step 5: Solve for x
    x = 5,661,073,799.76/85,631.32
  6. Step 6: Final answer
    x = 66,109.85

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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.