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Finding the Fourth Proportional to 48,539.54, 66,986.16 and 28,398.54

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Solution

The fourth proportional to 48,539.54, 66,986.16 and 28,398.54 is: 39,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,539.54 : 66,986.16 = 28,398.54 : x
  2. Step 2: Convert to fraction form
    48,539.54/66,986.16 = 28,398.54/x
  3. Step 3: Cross multiply
    48,539.54x = 66,986.16 × 28,398.54
  4. Step 4: Simplify right side
    48,539.54x = 1,902,309,144.21
  5. Step 5: Solve for x
    x = 1,902,309,144.21/48,539.54
  6. Step 6: Final answer
    x = 39,190.92

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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.