Home / 74,145.57-102,367.36-57,117.75

Finding the Fourth Proportional to 74,145.57, 102,367.36 and 57,117.75

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Solution

The fourth proportional to 74,145.57, 102,367.36 and 57,117.75 is: 78,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,145.57 : 102,367.36 = 57,117.75 : x
  2. Step 2: Convert to fraction form
    74,145.57/102,367.36 = 57,117.75/x
  3. Step 3: Cross multiply
    74,145.57x = 102,367.36 × 57,117.75
  4. Step 4: Simplify right side
    74,145.57x = 5,846,993,276.64
  5. Step 5: Solve for x
    x = 5,846,993,276.64/74,145.57
  6. Step 6: Final answer
    x = 78,858.30

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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.