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Finding the Fourth Proportional to 92,420.32, 127,540.08 and 49,978.84

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Solution

The fourth proportional to 92,420.32, 127,540.08 and 49,978.84 is: 68,970.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,420.32 : 127,540.08 = 49,978.84 : x
  2. Step 2: Convert to fraction form
    92,420.32/127,540.08 = 49,978.84/x
  3. Step 3: Cross multiply
    92,420.32x = 127,540.08 × 49,978.84
  4. Step 4: Simplify right side
    92,420.32x = 6,374,305,251.91
  5. Step 5: Solve for x
    x = 6,374,305,251.91/92,420.32
  6. Step 6: Final answer
    x = 68,970.82

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1.5x scale

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.