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Finding the Fourth Proportional to 72,432.40, 108,616.20 and 32,969.20

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Solution

The fourth proportional to 72,432.40, 108,616.20 and 32,969.20 is: 49,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,432.40 : 108,616.20 = 32,969.20 : x
  2. Step 2: Convert to fraction form
    72,432.40/108,616.20 = 32,969.20/x
  3. Step 3: Cross multiply
    72,432.40x = 108,616.20 × 32,969.20
  4. Step 4: Simplify right side
    72,432.40x = 3,580,989,221.04
  5. Step 5: Solve for x
    x = 3,580,989,221.04/72,432.40
  6. Step 6: Final answer
    x = 49,439.05

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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.