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Finding the Fourth Proportional to 48,405.06, 66,787.25 and 28,250.42

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Solution

The fourth proportional to 48,405.06, 66,787.25 and 28,250.42 is: 38,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,405.06 : 66,787.25 = 28,250.42 : x
  2. Step 2: Convert to fraction form
    48,405.06/66,787.25 = 28,250.42/x
  3. Step 3: Cross multiply
    48,405.06x = 66,787.25 × 28,250.42
  4. Step 4: Simplify right side
    48,405.06x = 1,886,767,387.96
  5. Step 5: Solve for x
    x = 1,886,767,387.96/48,405.06
  6. Step 6: Final answer
    x = 38,978.72

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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.