Home / 56,719.78-78,273.28-31,575.22

Finding the Fourth Proportional to 56,719.78, 78,273.28 and 31,575.22

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Solution

The fourth proportional to 56,719.78, 78,273.28 and 31,575.22 is: 43,573.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,719.78 : 78,273.28 = 31,575.22 : x
  2. Step 2: Convert to fraction form
    56,719.78/78,273.28 = 31,575.22/x
  3. Step 3: Cross multiply
    56,719.78x = 78,273.28 × 31,575.22
  4. Step 4: Simplify right side
    56,719.78x = 2,471,496,036.12
  5. Step 5: Solve for x
    x = 2,471,496,036.12/56,719.78
  6. Step 6: Final answer
    x = 43,573.79

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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.