Home / 57,179.70-78,905.68-31,686.44

Finding the Fourth Proportional to 57,179.70, 78,905.68 and 31,686.44

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Solution

The fourth proportional to 57,179.70, 78,905.68 and 31,686.44 is: 43,726.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,179.70 : 78,905.68 = 31,686.44 : x
  2. Step 2: Convert to fraction form
    57,179.70/78,905.68 = 31,686.44/x
  3. Step 3: Cross multiply
    57,179.70x = 78,905.68 × 31,686.44
  4. Step 4: Simplify right side
    57,179.70x = 2,500,239,621.23
  5. Step 5: Solve for x
    x = 2,500,239,621.23/57,179.70
  6. Step 6: Final answer
    x = 43,726.00

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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.