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Finding the Fourth Proportional to 79,992.48, 110,354.76 and 48,143.28

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Solution

The fourth proportional to 79,992.48, 110,354.76 and 48,143.28 is: 66,416.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,992.48 : 110,354.76 = 48,143.28 : x
  2. Step 2: Convert to fraction form
    79,992.48/110,354.76 = 48,143.28/x
  3. Step 3: Cross multiply
    79,992.48x = 110,354.76 × 48,143.28
  4. Step 4: Simplify right side
    79,992.48x = 5,312,840,110.01
  5. Step 5: Solve for x
    x = 5,312,840,110.01/79,992.48
  6. Step 6: Final answer
    x = 66,416.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.