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Finding the Fourth Proportional to 61,311.85, 84,612.86 and 34,454.28

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Solution

The fourth proportional to 61,311.85, 84,612.86 and 34,454.28 is: 47,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,311.85 : 84,612.86 = 34,454.28 : x
  2. Step 2: Convert to fraction form
    61,311.85/84,612.86 = 34,454.28/x
  3. Step 3: Cross multiply
    61,311.85x = 84,612.86 × 34,454.28
  4. Step 4: Simplify right side
    61,311.85x = 2,915,275,170.04
  5. Step 5: Solve for x
    x = 2,915,275,170.04/61,311.85
  6. Step 6: Final answer
    x = 47,548.32

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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.