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Finding the Fourth Proportional to 48,893.40, 73,485.90 and 42,478.20

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Solution

The fourth proportional to 48,893.40, 73,485.90 and 42,478.20 is: 63,843.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,893.40 : 73,485.90 = 42,478.20 : x
  2. Step 2: Convert to fraction form
    48,893.40/73,485.90 = 42,478.20/x
  3. Step 3: Cross multiply
    48,893.40x = 73,485.90 × 42,478.20
  4. Step 4: Simplify right side
    48,893.40x = 3,121,548,757.38
  5. Step 5: Solve for x
    x = 3,121,548,757.38/48,893.40
  6. Step 6: Final answer
    x = 63,843.97

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1.5x scale

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.