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Finding the Fourth Proportional to 172,028.76, 258,043.14 and 53,710.24

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Solution

The fourth proportional to 172,028.76, 258,043.14 and 53,710.24 is: 80,565.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,028.76 : 258,043.14 = 53,710.24 : x
  2. Step 2: Convert to fraction form
    172,028.76/258,043.14 = 53,710.24/x
  3. Step 3: Cross multiply
    172,028.76x = 258,043.14 × 53,710.24
  4. Step 4: Simplify right side
    172,028.76x = 13,859,558,969.54
  5. Step 5: Solve for x
    x = 13,859,558,969.54/172,028.76
  6. Step 6: Final answer
    x = 80,565.36

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1.5x scale

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.