Home / 56,907.76-78,523.32-31,757.20

Finding the Fourth Proportional to 56,907.76, 78,523.32 and 31,757.20

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Solution

The fourth proportional to 56,907.76, 78,523.32 and 31,757.20 is: 43,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,907.76 : 78,523.32 = 31,757.20 : x
  2. Step 2: Convert to fraction form
    56,907.76/78,523.32 = 31,757.20/x
  3. Step 3: Cross multiply
    56,907.76x = 78,523.32 × 31,757.20
  4. Step 4: Simplify right side
    56,907.76x = 2,493,680,777.90
  5. Step 5: Solve for x
    x = 2,493,680,777.90/56,907.76
  6. Step 6: Final answer
    x = 43,819.70

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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.