Home / 85,695.31-118,259.21-47,969.56

Finding the Fourth Proportional to 85,695.31, 118,259.21 and 47,969.56

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Solution

The fourth proportional to 85,695.31, 118,259.21 and 47,969.56 is: 66,197.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,695.31 : 118,259.21 = 47,969.56 : x
  2. Step 2: Convert to fraction form
    85,695.31/118,259.21 = 47,969.56/x
  3. Step 3: Cross multiply
    85,695.31x = 118,259.21 × 47,969.56
  4. Step 4: Simplify right side
    85,695.31x = 5,672,842,093.92
  5. Step 5: Solve for x
    x = 5,672,842,093.92/85,695.31
  6. Step 6: Final answer
    x = 66,197.81

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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.