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Finding the Fourth Proportional to 79,114.37, 109,176.87 and 42,814.97

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Solution

The fourth proportional to 79,114.37, 109,176.87 and 42,814.97 is: 59,084.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,114.37 : 109,176.87 = 42,814.97 : x
  2. Step 2: Convert to fraction form
    79,114.37/109,176.87 = 42,814.97/x
  3. Step 3: Cross multiply
    79,114.37x = 109,176.87 × 42,814.97
  4. Step 4: Simplify right side
    79,114.37x = 4,674,403,974.90
  5. Step 5: Solve for x
    x = 4,674,403,974.90/79,114.37
  6. Step 6: Final answer
    x = 59,084.14

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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.