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Finding the Fourth Proportional to 34,978.40, 48,251.64 and 21,552.56

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Solution

The fourth proportional to 34,978.40, 48,251.64 and 21,552.56 is: 29,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,978.40 : 48,251.64 = 21,552.56 : x
  2. Step 2: Convert to fraction form
    34,978.40/48,251.64 = 21,552.56/x
  3. Step 3: Cross multiply
    34,978.40x = 48,251.64 × 21,552.56
  4. Step 4: Simplify right side
    34,978.40x = 1,039,946,366.20
  5. Step 5: Solve for x
    x = 1,039,946,366.20/34,978.40
  6. Step 6: Final answer
    x = 29,731.10

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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.