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Finding the Fourth Proportional to 85,359.84, 117,729.96 and 54,735.86

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Solution

The fourth proportional to 85,359.84, 117,729.96 and 54,735.86 is: 75,492.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,359.84 : 117,729.96 = 54,735.86 : x
  2. Step 2: Convert to fraction form
    85,359.84/117,729.96 = 54,735.86/x
  3. Step 3: Cross multiply
    85,359.84x = 117,729.96 × 54,735.86
  4. Step 4: Simplify right side
    85,359.84x = 6,444,050,019.72
  5. Step 5: Solve for x
    x = 6,444,050,019.72/85,359.84
  6. Step 6: Final answer
    x = 75,492.76

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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.