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Finding the Fourth Proportional to 56,648.54, 84,981.18 and 21,100.88

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Solution

The fourth proportional to 56,648.54, 84,981.18 and 21,100.88 is: 31,654.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,648.54 : 84,981.18 = 21,100.88 : x
  2. Step 2: Convert to fraction form
    56,648.54/84,981.18 = 21,100.88/x
  3. Step 3: Cross multiply
    56,648.54x = 84,981.18 × 21,100.88
  4. Step 4: Simplify right side
    56,648.54x = 1,793,177,681.44
  5. Step 5: Solve for x
    x = 1,793,177,681.44/56,648.54
  6. Step 6: Final answer
    x = 31,654.44

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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.