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Finding the Fourth Proportional to 56,512.96, 78,003.12 and 35,279.44

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Solution

The fourth proportional to 56,512.96, 78,003.12 and 35,279.44 is: 48,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,512.96 : 78,003.12 = 35,279.44 : x
  2. Step 2: Convert to fraction form
    56,512.96/78,003.12 = 35,279.44/x
  3. Step 3: Cross multiply
    56,512.96x = 78,003.12 × 35,279.44
  4. Step 4: Simplify right side
    56,512.96x = 2,751,906,391.85
  5. Step 5: Solve for x
    x = 2,751,906,391.85/56,512.96
  6. Step 6: Final answer
    x = 48,695.14

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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.