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Finding the Fourth Proportional to 72,343.40, 108,482.70 and 32,880.20

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Solution

The fourth proportional to 72,343.40, 108,482.70 and 32,880.20 is: 49,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,343.40 : 108,482.70 = 32,880.20 : x
  2. Step 2: Convert to fraction form
    72,343.40/108,482.70 = 32,880.20/x
  3. Step 3: Cross multiply
    72,343.40x = 108,482.70 × 32,880.20
  4. Step 4: Simplify right side
    72,343.40x = 3,566,932,872.54
  5. Step 5: Solve for x
    x = 3,566,932,872.54/72,343.40
  6. Step 6: Final answer
    x = 49,305.57

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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.