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Finding the Fourth Proportional to 84,843.60, 117,081.90 and 47,115.42

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Solution

The fourth proportional to 84,843.60, 117,081.90 and 47,115.42 is: 65,018.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,843.60 : 117,081.90 = 47,115.42 : x
  2. Step 2: Convert to fraction form
    84,843.60/117,081.90 = 47,115.42/x
  3. Step 3: Cross multiply
    84,843.60x = 117,081.90 × 47,115.42
  4. Step 4: Simplify right side
    84,843.60x = 5,516,362,892.90
  5. Step 5: Solve for x
    x = 5,516,362,892.90/84,843.60
  6. Step 6: Final answer
    x = 65,018.02

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1.5x scale

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.