Home / 56,907.88-78,538.10-31,418.80

Finding the Fourth Proportional to 56,907.88, 78,538.10 and 31,418.80

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Solution

The fourth proportional to 56,907.88, 78,538.10 and 31,418.80 is: 43,360.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,907.88 : 78,538.10 = 31,418.80 : x
  2. Step 2: Convert to fraction form
    56,907.88/78,538.10 = 31,418.80/x
  3. Step 3: Cross multiply
    56,907.88x = 78,538.10 × 31,418.80
  4. Step 4: Simplify right side
    56,907.88x = 2,467,572,856.28
  5. Step 5: Solve for x
    x = 2,467,572,856.28/56,907.88
  6. Step 6: Final answer
    x = 43,360.83

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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.