Home / 102,942.36-142,048.52-57,622.88

Finding the Fourth Proportional to 102,942.36, 142,048.52 and 57,622.88

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Solution

The fourth proportional to 102,942.36, 142,048.52 and 57,622.88 is: 79,512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,942.36 : 142,048.52 = 57,622.88 : x
  2. Step 2: Convert to fraction form
    102,942.36/142,048.52 = 57,622.88/x
  3. Step 3: Cross multiply
    102,942.36x = 142,048.52 × 57,622.88
  4. Step 4: Simplify right side
    102,942.36x = 8,185,244,822.14
  5. Step 5: Solve for x
    x = 8,185,244,822.14/102,942.36
  6. Step 6: Final answer
    x = 79,512.89

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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.