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Finding the Fourth Proportional to 85,992.98, 118,677.76 and 47,759.90

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Solution

The fourth proportional to 85,992.98, 118,677.76 and 47,759.90 is: 65,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,992.98 : 118,677.76 = 47,759.90 : x
  2. Step 2: Convert to fraction form
    85,992.98/118,677.76 = 47,759.90/x
  3. Step 3: Cross multiply
    85,992.98x = 118,677.76 × 47,759.90
  4. Step 4: Simplify right side
    85,992.98x = 5,668,037,237.04
  5. Step 5: Solve for x
    x = 5,668,037,237.04/85,992.98
  6. Step 6: Final answer
    x = 65,912.79

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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.