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Finding the Fourth Proportional to 170,039.40, 255,048.30 and 57,719.40

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Solution

The fourth proportional to 170,039.40, 255,048.30 and 57,719.40 is: 86,575.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,039.40 : 255,048.30 = 57,719.40 : x
  2. Step 2: Convert to fraction form
    170,039.40/255,048.30 = 57,719.40/x
  3. Step 3: Cross multiply
    170,039.40x = 255,048.30 × 57,719.40
  4. Step 4: Simplify right side
    170,039.40x = 14,721,234,847.02
  5. Step 5: Solve for x
    x = 14,721,234,847.02/170,039.40
  6. Step 6: Final answer
    x = 86,575.43

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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.