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Finding the Fourth Proportional to 34,781.78, 47,998.85 and 19,674.11

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Solution

The fourth proportional to 34,781.78, 47,998.85 and 19,674.11 is: 27,150.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,781.78 : 47,998.85 = 19,674.11 : x
  2. Step 2: Convert to fraction form
    34,781.78/47,998.85 = 19,674.11/x
  3. Step 3: Cross multiply
    34,781.78x = 47,998.85 × 19,674.11
  4. Step 4: Simplify right side
    34,781.78x = 944,334,556.40
  5. Step 5: Solve for x
    x = 944,334,556.40/34,781.78
  6. Step 6: Final answer
    x = 27,150.27

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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.