Home / 57,055.12-78,709.54-36,918.48

Finding the Fourth Proportional to 57,055.12, 78,709.54 and 36,918.48

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Solution

The fourth proportional to 57,055.12, 78,709.54 and 36,918.48 is: 50,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,055.12 : 78,709.54 = 36,918.48 : x
  2. Step 2: Convert to fraction form
    57,055.12/78,709.54 = 36,918.48/x
  3. Step 3: Cross multiply
    57,055.12x = 78,709.54 × 36,918.48
  4. Step 4: Simplify right side
    57,055.12x = 2,905,836,578.30
  5. Step 5: Solve for x
    x = 2,905,836,578.30/57,055.12
  6. Step 6: Final answer
    x = 50,930.34

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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.