Home / 78,728.84-117,969.34-49,102.28

Finding the Fourth Proportional to 78,728.84, 117,969.34 and 49,102.28

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Solution

The fourth proportional to 78,728.84, 117,969.34 and 49,102.28 is: 73,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,728.84 : 117,969.34 = 49,102.28 : x
  2. Step 2: Convert to fraction form
    78,728.84/117,969.34 = 49,102.28/x
  3. Step 3: Cross multiply
    78,728.84x = 117,969.34 × 49,102.28
  4. Step 4: Simplify right side
    78,728.84x = 5,792,563,564.10
  5. Step 5: Solve for x
    x = 5,792,563,564.10/78,728.84
  6. Step 6: Final answer
    x = 73,576.13

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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.