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Finding the Fourth Proportional to 85,313.88, 117,770.90 and 55,113.92

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Solution

The fourth proportional to 85,313.88, 117,770.90 and 55,113.92 is: 76,081.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,313.88 : 117,770.90 = 55,113.92 : x
  2. Step 2: Convert to fraction form
    85,313.88/117,770.90 = 55,113.92/x
  3. Step 3: Cross multiply
    85,313.88x = 117,770.90 × 55,113.92
  4. Step 4: Simplify right side
    85,313.88x = 6,490,815,960.93
  5. Step 5: Solve for x
    x = 6,490,815,960.93/85,313.88
  6. Step 6: Final answer
    x = 76,081.59

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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.