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Finding the Fourth Proportional to 79,246.20, 109,369.80 and 47,432.64

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Solution

The fourth proportional to 79,246.20, 109,369.80 and 47,432.64 is: 65,463.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,246.20 : 109,369.80 = 47,432.64 : x
  2. Step 2: Convert to fraction form
    79,246.20/109,369.80 = 47,432.64/x
  3. Step 3: Cross multiply
    79,246.20x = 109,369.80 × 47,432.64
  4. Step 4: Simplify right side
    79,246.20x = 5,187,698,350.27
  5. Step 5: Solve for x
    x = 5,187,698,350.27/79,246.20
  6. Step 6: Final answer
    x = 65,463.06

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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.