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Finding the Fourth Proportional to 72,687.68, 108,949.44 and 37,048.88

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Solution

The fourth proportional to 72,687.68, 108,949.44 and 37,048.88 is: 55,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,687.68 : 108,949.44 = 37,048.88 : x
  2. Step 2: Convert to fraction form
    72,687.68/108,949.44 = 37,048.88/x
  3. Step 3: Cross multiply
    72,687.68x = 108,949.44 × 37,048.88
  4. Step 4: Simplify right side
    72,687.68x = 4,036,454,728.63
  5. Step 5: Solve for x
    x = 4,036,454,728.63/72,687.68
  6. Step 6: Final answer
    x = 55,531.48

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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.