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Finding the Fourth Proportional to 26,290,978.72, 39,432,793.47 and 9,018,897.64

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Solution

The fourth proportional to 26,290,978.72, 39,432,793.47 and 9,018,897.64 is: 13,527,085.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,290,978.72 : 39,432,793.47 = 9,018,897.64 : x
  2. Step 2: Convert to fraction form
    26,290,978.72/39,432,793.47 = 9,018,897.64/x
  3. Step 3: Cross multiply
    26,290,978.72x = 39,432,793.47 × 9,018,897.64
  4. Step 4: Simplify right side
    26,290,978.72x = 355,640,327,965,190.44
  5. Step 5: Solve for x
    x = 355,640,327,965,190.44/26,290,978.72
  6. Step 6: Final answer
    x = 13,527,085.92

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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.