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Finding the Fourth Proportional to 47,479.36, 65,521.92 and 28,612.48

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Solution

The fourth proportional to 47,479.36, 65,521.92 and 28,612.48 is: 39,485.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,479.36 : 65,521.92 = 28,612.48 : x
  2. Step 2: Convert to fraction form
    47,479.36/65,521.92 = 28,612.48/x
  3. Step 3: Cross multiply
    47,479.36x = 65,521.92 × 28,612.48
  4. Step 4: Simplify right side
    47,479.36x = 1,874,744,625.56
  5. Step 5: Solve for x
    x = 1,874,744,625.56/47,479.36
  6. Step 6: Final answer
    x = 39,485.47

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