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Finding the Fourth Proportional to 72,081.96, 108,122.94 and 32,638.20

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Solution

The fourth proportional to 72,081.96, 108,122.94 and 32,638.20 is: 48,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,081.96 : 108,122.94 = 32,638.20 : x
  2. Step 2: Convert to fraction form
    72,081.96/108,122.94 = 32,638.20/x
  3. Step 3: Cross multiply
    72,081.96x = 108,122.94 × 32,638.20
  4. Step 4: Simplify right side
    72,081.96x = 3,528,938,140.31
  5. Step 5: Solve for x
    x = 3,528,938,140.31/72,081.96
  6. Step 6: Final answer
    x = 48,957.30

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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.