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Finding the Fourth Proportional to 84,618.60, 116,736.08 and 54,398.31

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Solution

The fourth proportional to 84,618.60, 116,736.08 and 54,398.31 is: 75,045.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,618.60 : 116,736.08 = 54,398.31 : x
  2. Step 2: Convert to fraction form
    84,618.60/116,736.08 = 54,398.31/x
  3. Step 3: Cross multiply
    84,618.60x = 116,736.08 × 54,398.31
  4. Step 4: Simplify right side
    84,618.60x = 6,350,245,468.02
  5. Step 5: Solve for x
    x = 6,350,245,468.02/84,618.60
  6. Step 6: Final answer
    x = 75,045.50

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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.