Home / 85,517.47-118,013.31-47,278.02

Finding the Fourth Proportional to 85,517.47, 118,013.31 and 47,278.02

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Solution

The fourth proportional to 85,517.47, 118,013.31 and 47,278.02 is: 65,243.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517.47 : 118,013.31 = 47,278.02 : x
  2. Step 2: Convert to fraction form
    85,517.47/118,013.31 = 47,278.02/x
  3. Step 3: Cross multiply
    85,517.47x = 118,013.31 × 47,278.02
  4. Step 4: Simplify right side
    85,517.47x = 5,579,435,630.45
  5. Step 5: Solve for x
    x = 5,579,435,630.45/85,517.47
  6. Step 6: Final answer
    x = 65,243.23

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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.