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Finding the Fourth Proportional to 49,565, 68,390.88 and 28,054.64

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Solution

The fourth proportional to 49,565, 68,390.88 and 28,054.64 is: 38,710.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,565 : 68,390.88 = 28,054.64 : x
  2. Step 2: Convert to fraction form
    49,565/68,390.88 = 28,054.64/x
  3. Step 3: Cross multiply
    49,565x = 68,390.88 × 28,054.64
  4. Step 4: Simplify right side
    49,565x = 1,918,681,517.68
  5. Step 5: Solve for x
    x = 1,918,681,517.68/49,565
  6. Step 6: Final answer
    x = 38,710.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.