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Finding the Fourth Proportional to 172,043.39, 258,064.99 and 53,724.87

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Solution

The fourth proportional to 172,043.39, 258,064.99 and 53,724.87 is: 80,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,043.39 : 258,064.99 = 53,724.87 : x
  2. Step 2: Convert to fraction form
    172,043.39/258,064.99 = 53,724.87/x
  3. Step 3: Cross multiply
    172,043.39x = 258,064.99 × 53,724.87
  4. Step 4: Simplify right side
    172,043.39x = 13,864,507,904.99
  5. Step 5: Solve for x
    x = 13,864,507,904.99/172,043.39
  6. Step 6: Final answer
    x = 80,587.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.