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Finding the Fourth Proportional to 65,915.75, 98,888.31 and 36,318.35

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Solution

The fourth proportional to 65,915.75, 98,888.31 and 36,318.35 is: 54,485.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,915.75 : 98,888.31 = 36,318.35 : x
  2. Step 2: Convert to fraction form
    65,915.75/98,888.31 = 36,318.35/x
  3. Step 3: Cross multiply
    65,915.75x = 98,888.31 × 36,318.35
  4. Step 4: Simplify right side
    65,915.75x = 3,591,459,759.05
  5. Step 5: Solve for x
    x = 3,591,459,759.05/65,915.75
  6. Step 6: Final answer
    x = 54,485.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.