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Finding the Fourth Proportional to 70,043.64, 96,659.77 and 39,828.96

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Solution

The fourth proportional to 70,043.64, 96,659.77 and 39,828.96 is: 54,963.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,043.64 : 96,659.77 = 39,828.96 : x
  2. Step 2: Convert to fraction form
    70,043.64/96,659.77 = 39,828.96/x
  3. Step 3: Cross multiply
    70,043.64x = 96,659.77 × 39,828.96
  4. Step 4: Simplify right side
    70,043.64x = 3,849,858,088.05
  5. Step 5: Solve for x
    x = 3,849,858,088.05/70,043.64
  6. Step 6: Final answer
    x = 54,963.71

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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.