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Finding the Fourth Proportional to 29,481,978.90, 40,663,471.32 and 19,540,882.92

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Solution

The fourth proportional to 29,481,978.90, 40,663,471.32 and 19,540,882.92 is: 26,952,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,481,978.90 : 40,663,471.32 = 19,540,882.92 : x
  2. Step 2: Convert to fraction form
    29,481,978.90/40,663,471.32 = 19,540,882.92/x
  3. Step 3: Cross multiply
    29,481,978.90x = 40,663,471.32 × 19,540,882.92
  4. Step 4: Simplify right side
    29,481,978.90x = 794,600,132,184,897.88
  5. Step 5: Solve for x
    x = 794,600,132,184,897.88/29,481,978.90
  6. Step 6: Final answer
    x = 26,952,062.30

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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.