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Finding the Fourth Proportional to 48,459.49, 72,659.47 and 18,842.80

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Solution

The fourth proportional to 48,459.49, 72,659.47 and 18,842.80 is: 28,252.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,459.49 : 72,659.47 = 18,842.80 : x
  2. Step 2: Convert to fraction form
    48,459.49/72,659.47 = 18,842.80/x
  3. Step 3: Cross multiply
    48,459.49x = 72,659.47 × 18,842.80
  4. Step 4: Simplify right side
    48,459.49x = 1,369,107,995.86
  5. Step 5: Solve for x
    x = 1,369,107,995.86/48,459.49
  6. Step 6: Final answer
    x = 28,252.63

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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.