Home / 56,212.21-77,573.96-30,720.15

Finding the Fourth Proportional to 56,212.21, 77,573.96 and 30,720.15

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Solution

The fourth proportional to 56,212.21, 77,573.96 and 30,720.15 is: 42,394.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,212.21 : 77,573.96 = 30,720.15 : x
  2. Step 2: Convert to fraction form
    56,212.21/77,573.96 = 30,720.15/x
  3. Step 3: Cross multiply
    56,212.21x = 77,573.96 × 30,720.15
  4. Step 4: Simplify right side
    56,212.21x = 2,383,083,486.35
  5. Step 5: Solve for x
    x = 2,383,083,486.35/56,212.21
  6. Step 6: Final answer
    x = 42,394.41

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1.5x scale

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.