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Finding the Fourth Proportional to 91,999.30, 137,915.80 and 32,820.90

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Solution

The fourth proportional to 91,999.30, 137,915.80 and 32,820.90 is: 49,201.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,999.30 : 137,915.80 = 32,820.90 : x
  2. Step 2: Convert to fraction form
    91,999.30/137,915.80 = 32,820.90/x
  3. Step 3: Cross multiply
    91,999.30x = 137,915.80 × 32,820.90
  4. Step 4: Simplify right side
    91,999.30x = 4,526,520,680.22
  5. Step 5: Solve for x
    x = 4,526,520,680.22/91,999.30
  6. Step 6: Final answer
    x = 49,201.69

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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.