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Finding the Fourth Proportional to 85,878.95, 118,527.12 and 47,650.79

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Solution

The fourth proportional to 85,878.95, 118,527.12 and 47,650.79 is: 65,765.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,878.95 : 118,527.12 = 47,650.79 : x
  2. Step 2: Convert to fraction form
    85,878.95/118,527.12 = 47,650.79/x
  3. Step 3: Cross multiply
    85,878.95x = 118,527.12 × 47,650.79
  4. Step 4: Simplify right side
    85,878.95x = 5,647,910,311.79
  5. Step 5: Solve for x
    x = 5,647,910,311.79/85,878.95
  6. Step 6: Final answer
    x = 65,765.95

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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.