Home / 85,654.80-118,202.60-47,929.36

Finding the Fourth Proportional to 85,654.80, 118,202.60 and 47,929.36

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Solution

The fourth proportional to 85,654.80, 118,202.60 and 47,929.36 is: 66,141.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,654.80 : 118,202.60 = 47,929.36 : x
  2. Step 2: Convert to fraction form
    85,654.80/118,202.60 = 47,929.36/x
  3. Step 3: Cross multiply
    85,654.80x = 118,202.60 × 47,929.36
  4. Step 4: Simplify right side
    85,654.80x = 5,665,374,968.34
  5. Step 5: Solve for x
    x = 5,665,374,968.34/85,654.80
  6. Step 6: Final answer
    x = 66,141.94

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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.