Home / 57,179.12-78,907.65-31,685.91

Finding the Fourth Proportional to 57,179.12, 78,907.65 and 31,685.91

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Solution

The fourth proportional to 57,179.12, 78,907.65 and 31,685.91 is: 43,726.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,179.12 : 78,907.65 = 31,685.91 : x
  2. Step 2: Convert to fraction form
    57,179.12/78,907.65 = 31,685.91/x
  3. Step 3: Cross multiply
    57,179.12x = 78,907.65 × 31,685.91
  4. Step 4: Simplify right side
    57,179.12x = 2,500,260,725.34
  5. Step 5: Solve for x
    x = 2,500,260,725.34/57,179.12
  6. Step 6: Final answer
    x = 43,726.82

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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.