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Finding the Fourth Proportional to 35,367.78, 48,787.20 and 21,212.40

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Solution

The fourth proportional to 35,367.78, 48,787.20 and 21,212.40 is: 29,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,367.78 : 48,787.20 = 21,212.40 : x
  2. Step 2: Convert to fraction form
    35,367.78/48,787.20 = 21,212.40/x
  3. Step 3: Cross multiply
    35,367.78x = 48,787.20 × 21,212.40
  4. Step 4: Simplify right side
    35,367.78x = 1,034,893,601.28
  5. Step 5: Solve for x
    x = 1,034,893,601.28/35,367.78
  6. Step 6: Final answer
    x = 29,260.91

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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.