Home / 56,742.10-78,306.22-31,249.54

Finding the Fourth Proportional to 56,742.10, 78,306.22 and 31,249.54

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Solution

The fourth proportional to 56,742.10, 78,306.22 and 31,249.54 is: 43,125.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,742.10 : 78,306.22 = 31,249.54 : x
  2. Step 2: Convert to fraction form
    56,742.10/78,306.22 = 31,249.54/x
  3. Step 3: Cross multiply
    56,742.10x = 78,306.22 × 31,249.54
  4. Step 4: Simplify right side
    56,742.10x = 2,447,033,354.14
  5. Step 5: Solve for x
    x = 2,447,033,354.14/56,742.10
  6. Step 6: Final answer
    x = 43,125.53

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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.