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Finding the Fourth Proportional to 79,182.86, 109,266.42 and 45,190.40

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Solution

The fourth proportional to 79,182.86, 109,266.42 and 45,190.40 is: 62,359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,182.86 : 109,266.42 = 45,190.40 : x
  2. Step 2: Convert to fraction form
    79,182.86/109,266.42 = 45,190.40/x
  3. Step 3: Cross multiply
    79,182.86x = 109,266.42 × 45,190.40
  4. Step 4: Simplify right side
    79,182.86x = 4,937,793,226.37
  5. Step 5: Solve for x
    x = 4,937,793,226.37/79,182.86
  6. Step 6: Final answer
    x = 62,359.37

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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.