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Finding the Fourth Proportional to 39,308, 58,978.08 and 17,109.92

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Solution

The fourth proportional to 39,308, 58,978.08 and 17,109.92 is: 25,671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308 : 58,978.08 = 17,109.92 : x
  2. Step 2: Convert to fraction form
    39,308/58,978.08 = 17,109.92/x
  3. Step 3: Cross multiply
    39,308x = 58,978.08 × 17,109.92
  4. Step 4: Simplify right side
    39,308x = 1,009,110,230.55
  5. Step 5: Solve for x
    x = 1,009,110,230.55/39,308
  6. Step 6: Final answer
    x = 25,671.88

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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.