Home / 78,949.97-118,425.47-31,569.04

Finding the Fourth Proportional to 78,949.97, 118,425.47 and 31,569.04

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Solution

The fourth proportional to 78,949.97, 118,425.47 and 31,569.04 is: 47,353.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,949.97 : 118,425.47 = 31,569.04 : x
  2. Step 2: Convert to fraction form
    78,949.97/118,425.47 = 31,569.04/x
  3. Step 3: Cross multiply
    78,949.97x = 118,425.47 × 31,569.04
  4. Step 4: Simplify right side
    78,949.97x = 3,738,578,241.60
  5. Step 5: Solve for x
    x = 3,738,578,241.60/78,949.97
  6. Step 6: Final answer
    x = 47,353.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.