Home / 102,949.05-142,062.80-57,619.29

Finding the Fourth Proportional to 102,949.05, 142,062.80 and 57,619.29

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Solution

The fourth proportional to 102,949.05, 142,062.80 and 57,619.29 is: 79,510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,949.05 : 142,062.80 = 57,619.29 : x
  2. Step 2: Convert to fraction form
    102,949.05/142,062.80 = 57,619.29/x
  3. Step 3: Cross multiply
    102,949.05x = 142,062.80 × 57,619.29
  4. Step 4: Simplify right side
    102,949.05x = 8,185,557,383.32
  5. Step 5: Solve for x
    x = 8,185,557,383.32/102,949.05
  6. Step 6: Final answer
    x = 79,510.76

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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.