Home / 85,982.70-118,656.35-47,742.31

Finding the Fourth Proportional to 85,982.70, 118,656.35 and 47,742.31

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Solution

The fourth proportional to 85,982.70, 118,656.35 and 47,742.31 is: 65,884.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,982.70 : 118,656.35 = 47,742.31 : x
  2. Step 2: Convert to fraction form
    85,982.70/118,656.35 = 47,742.31/x
  3. Step 3: Cross multiply
    85,982.70x = 118,656.35 × 47,742.31
  4. Step 4: Simplify right side
    85,982.70x = 5,664,928,245.17
  5. Step 5: Solve for x
    x = 5,664,928,245.17/85,982.70
  6. Step 6: Final answer
    x = 65,884.51

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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.