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Finding the Fourth Proportional to 170,058.39, 255,078.47 and 51,720.50

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Solution

The fourth proportional to 170,058.39, 255,078.47 and 51,720.50 is: 77,577.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,058.39 : 255,078.47 = 51,720.50 : x
  2. Step 2: Convert to fraction form
    170,058.39/255,078.47 = 51,720.50/x
  3. Step 3: Cross multiply
    170,058.39x = 255,078.47 × 51,720.50
  4. Step 4: Simplify right side
    170,058.39x = 13,192,785,766.30
  5. Step 5: Solve for x
    x = 13,192,785,766.30/170,058.39
  6. Step 6: Final answer
    x = 77,577.98

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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.