Home / 85,765.12-118,355.88-52,231.12

Finding the Fourth Proportional to 85,765.12, 118,355.88 and 52,231.12

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Solution

The fourth proportional to 85,765.12, 118,355.88 and 52,231.12 is: 72,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,765.12 : 118,355.88 = 52,231.12 : x
  2. Step 2: Convert to fraction form
    85,765.12/118,355.88 = 52,231.12/x
  3. Step 3: Cross multiply
    85,765.12x = 118,355.88 × 52,231.12
  4. Step 4: Simplify right side
    85,765.12x = 6,181,860,170.99
  5. Step 5: Solve for x
    x = 6,181,860,170.99/85,765.12
  6. Step 6: Final answer
    x = 72,078.95

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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.