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Finding the Fourth Proportional to 85,989.06, 118,755 and 59,200.74

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Solution

The fourth proportional to 85,989.06, 118,755 and 59,200.74 is: 81,759.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,989.06 : 118,755 = 59,200.74 : x
  2. Step 2: Convert to fraction form
    85,989.06/118,755 = 59,200.74/x
  3. Step 3: Cross multiply
    85,989.06x = 118,755 × 59,200.74
  4. Step 4: Simplify right side
    85,989.06x = 7,030,383,878.70
  5. Step 5: Solve for x
    x = 7,030,383,878.70/85,989.06
  6. Step 6: Final answer
    x = 81,759.05

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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.