Home / 85,310.86-117,766.74-55,110.90

Finding the Fourth Proportional to 85,310.86, 117,766.74 and 55,110.90

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Solution

The fourth proportional to 85,310.86, 117,766.74 and 55,110.90 is: 76,077.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,310.86 : 117,766.74 = 55,110.90 : x
  2. Step 2: Convert to fraction form
    85,310.86/117,766.74 = 55,110.90/x
  3. Step 3: Cross multiply
    85,310.86x = 117,766.74 × 55,110.90
  4. Step 4: Simplify right side
    85,310.86x = 6,490,231,031.47
  5. Step 5: Solve for x
    x = 6,490,231,031.47/85,310.86
  6. Step 6: Final answer
    x = 76,077.43

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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.