Home / 56,405-77,839.44-31,255.04

Finding the Fourth Proportional to 56,405, 77,839.44 and 31,255.04

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Solution

The fourth proportional to 56,405, 77,839.44 and 31,255.04 is: 43,132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,405 : 77,839.44 = 31,255.04 : x
  2. Step 2: Convert to fraction form
    56,405/77,839.44 = 31,255.04/x
  3. Step 3: Cross multiply
    56,405x = 77,839.44 × 31,255.04
  4. Step 4: Simplify right side
    56,405x = 2,432,874,810.78
  5. Step 5: Solve for x
    x = 2,432,874,810.78/56,405
  6. Step 6: Final answer
    x = 43,132.25

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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.