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Finding the Fourth Proportional to 48,632.88, 72,899.08 and 18,638.88

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Solution

The fourth proportional to 48,632.88, 72,899.08 and 18,638.88 is: 27,939.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,632.88 : 72,899.08 = 18,638.88 : x
  2. Step 2: Convert to fraction form
    48,632.88/72,899.08 = 18,638.88/x
  3. Step 3: Cross multiply
    48,632.88x = 72,899.08 × 18,638.88
  4. Step 4: Simplify right side
    48,632.88x = 1,358,757,204.23
  5. Step 5: Solve for x
    x = 1,358,757,204.23/48,632.88
  6. Step 6: Final answer
    x = 27,939.07

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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.