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Finding the Fourth Proportional to 172,657.79, 258,962.07 and 54,326.05

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Solution

The fourth proportional to 172,657.79, 258,962.07 and 54,326.05 is: 81,481.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,657.79 : 258,962.07 = 54,326.05 : x
  2. Step 2: Convert to fraction form
    172,657.79/258,962.07 = 54,326.05/x
  3. Step 3: Cross multiply
    172,657.79x = 258,962.07 × 54,326.05
  4. Step 4: Simplify right side
    172,657.79x = 14,068,385,715.52
  5. Step 5: Solve for x
    x = 14,068,385,715.52/172,657.79
  6. Step 6: Final answer
    x = 81,481.33

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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.