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Finding the Fourth Proportional to 85,820.64, 118,436.84 and 49,508.64

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Solution

The fourth proportional to 85,820.64, 118,436.84 and 49,508.64 is: 68,324.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,820.64 : 118,436.84 = 49,508.64 : x
  2. Step 2: Convert to fraction form
    85,820.64/118,436.84 = 49,508.64/x
  3. Step 3: Cross multiply
    85,820.64x = 118,436.84 × 49,508.64
  4. Step 4: Simplify right side
    85,820.64x = 5,863,646,874.30
  5. Step 5: Solve for x
    x = 5,863,646,874.30/85,820.64
  6. Step 6: Final answer
    x = 68,324.44

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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.