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Finding the Fourth Proportional to 84,993.76, 117,292.08 and 47,267.20

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Solution

The fourth proportional to 84,993.76, 117,292.08 and 47,267.20 is: 65,229.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,993.76 : 117,292.08 = 47,267.20 : x
  2. Step 2: Convert to fraction form
    84,993.76/117,292.08 = 47,267.20/x
  3. Step 3: Cross multiply
    84,993.76x = 117,292.08 × 47,267.20
  4. Step 4: Simplify right side
    84,993.76x = 5,544,068,203.78
  5. Step 5: Solve for x
    x = 5,544,068,203.78/84,993.76
  6. Step 6: Final answer
    x = 65,229.12

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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.