Home / 172,645.20-258,968.40-47,986.08

Finding the Fourth Proportional to 172,645.20, 258,968.40 and 47,986.08

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Solution

The fourth proportional to 172,645.20, 258,968.40 and 47,986.08 is: 71,979.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,645.20 : 258,968.40 = 47,986.08 : x
  2. Step 2: Convert to fraction form
    172,645.20/258,968.40 = 47,986.08/x
  3. Step 3: Cross multiply
    172,645.20x = 258,968.40 × 47,986.08
  4. Step 4: Simplify right side
    172,645.20x = 12,426,878,359.87
  5. Step 5: Solve for x
    x = 12,426,878,359.87/172,645.20
  6. Step 6: Final answer
    x = 71,979.29

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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.